101124421 has 4 divisors (see below), whose sum is σ = 104611500. Its totient is φ = 97637344.

The previous prime is 101124389. The next prime is 101124427. The reversal of 101124421 is 124421101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41139396 + 59985025 = 6414^2 + 7745^2 .

It is a cyclic number.

It is not a de Polignac number, because 101124421 - 2⁵ = 101124389 is a prime.

It is a super-2 number, since 2×101124421² = 20452297045170482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101124395 and 101124404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101124427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1743496 + ... + 1743553.

It is an arithmetic number, because the mean of its divisors is an integer number (26152875).

Almost surely, 2^101124421 is an apocalyptic number.

It is an amenable number.

101124421 is a deficient number, since it is larger than the sum of its proper divisors (3487079).

101124421 is an equidigital number, since it uses as much as digits as its factorization.

101124421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487078.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 101124421 is about 10056.0638920007. The cubic root of 101124421 is about 465.8921032593.

Adding to 101124421 its reverse (124421101), we get a palindrome (225545522).

It can be divided in two parts, 101 and 124421, that multiplied together give a palindrome (12566521).

The spelling of 101124421 in words is "one hundred one million, one hundred twenty-four thousand, four hundred twenty-one".