1010401221 has 4 divisors (see below), whose sum is σ = 1347201632. Its totient is φ = 673600812.

The previous prime is 1010401211. The next prime is 1010401237. The reversal of 1010401221 is 1221040101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1221040101 = 3 ⋅407013367.

It is not a de Polignac number, because 1010401221 - 2⁹ = 1010400709 is a prime.

It is a super-3 number, since 3×1010401221³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010401197 and 1010401206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010401211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168400201 + ... + 168400206.

It is an arithmetic number, because the mean of its divisors is an integer number (336800408).

Almost surely, 2^1010401221 is an apocalyptic number.

It is an amenable number.

1010401221 is a deficient number, since it is larger than the sum of its proper divisors (336800411).

1010401221 is an equidigital number, since it uses as much as digits as its factorization.

1010401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336800410.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1010401221 is about 31786.8089150201. The cubic root of 1010401221 is about 1003.4551220494.

Adding to 1010401221 its reverse (1221040101), we get a palindrome (2231441322).

The spelling of 1010401221 in words is "one billion, ten million, four hundred one thousand, two hundred twenty-one".