1011332121 has 4 divisors (see below), whose sum is σ = 1348442832. Its totient is φ = 674221412.

The previous prime is 1011332099. The next prime is 1011332141. The reversal of 1011332121 is 1212331101.

It is a happy number.

1011332121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 1212331101 = 3 ⋅404110367.

It is a cyclic number.

It is not a de Polignac number, because 1011332121 - 2¹⁸ = 1011069977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011332121.

It is not an unprimeable number, because it can be changed into a prime (1011332141) 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, 168555351 + ... + 168555356.

It is an arithmetic number, because the mean of its divisors is an integer number (337110708).

Almost surely, 2^1011332121 is an apocalyptic number.

It is an amenable number.

1011332121 is a deficient number, since it is larger than the sum of its proper divisors (337110711).

1011332121 is an equidigital number, since it uses as much as digits as its factorization.

1011332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337110710.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1011332121 is about 31801.4484104105. The cubic root of 1011332121 is about 1003.7631942712.

Adding to 1011332121 its reverse (1212331101), we get a palindrome (2223663222).

The spelling of 1011332121 in words is "one billion, eleven million, three hundred thirty-two thousand, one hundred twenty-one".