121045355253 has 12 divisors (see below), whose sum is σ = 175153854720. Its totient is φ = 80553566376.

The previous prime is 121045355239. The next prime is 121045355261. The reversal of 121045355253 is 352553540121.

121045355253 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 4 + 53 + 552 + 53 = 666.

It is not a de Polignac number, because 121045355253 - 2²⁵ = 121011800821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121045355203) 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, 11939413 + ... + 11949546.

It is an arithmetic number, because the mean of its divisors is an integer number (14596154560).

Almost surely, 2^121045355253 is an apocalyptic number.

It is an amenable number.

121045355253 is a deficient number, since it is larger than the sum of its proper divisors (54108499467).

121045355253 is a wasteful number, since it uses less digits than its factorization.

121045355253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23889528 (or 23889525 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 121045355253 its reverse (352553540121), we get a palindrome (473598895374).

The spelling of 121045355253 in words is "one hundred twenty-one billion, forty-five million, three hundred fifty-five thousand, two hundred fifty-three".