121033113021 has 12 divisors (see below), whose sum is σ = 175422285948. Its totient is φ = 80413352064.

The previous prime is 121033112917. The next prime is 121033113041. The reversal of 121033113021 is 120311330121.

It can be written as a sum of positive squares in 2 ways, for example, as 102061080900 + 18972032121 = 319470^2 + 137739^2 .

It is not a de Polignac number, because 121033113021 - 2¹⁴ = 121033096637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121033112985 and 121033113003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121033113041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22946380 + ... + 22951653.

It is an arithmetic number, because the mean of its divisors is an integer number (14618523829).

Almost surely, 2^121033113021 is an apocalyptic number.

It is an amenable number.

121033113021 is a deficient number, since it is larger than the sum of its proper divisors (54389172927).

121033113021 is a wasteful number, since it uses less digits than its factorization.

121033113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45898332 (or 45898329 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 121033113021 its reverse (120311330121), we get a palindrome (241344443142).

The spelling of 121033113021 in words is "one hundred twenty-one billion, thirty-three million, one hundred thirteen thousand, twenty-one".