121131021052052 has 36 divisors (see below), whose sum is σ = 233348240665428. Its totient is φ = 54977742758400.

The previous prime is 121131021052033. The next prime is 121131021052147. The reversal of 121131021052052 is 250250120131121.

It can be written as a sum of positive squares in 2 ways, for example, as 20731302410896 + 100399718641156 = 4553164^2 + 10019966^2 .

It is a super-2 number, since 2×121131021052052² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185610899 + ... + 186262362.

Almost surely, 2^{121131021052052} is an apocalyptic number.

It is an amenable number.

121131021052052 is a deficient number, since it is larger than the sum of its proper divisors (112217219613376).

121131021052052 is a wasteful number, since it uses less digits than its factorization.

121131021052052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371873960 (or 371873947 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 121131021052052 its reverse (250250120131121), we get a palindrome (371381141183173).

The spelling of 121131021052052 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, twenty-one million, fifty-two thousand, fifty-two".