11552102421021 has 32 divisors (see below), whose sum is σ = 17407187280000. Its totient is φ = 7569612301824.

The previous prime is 11552102421017. The next prime is 11552102421089. The reversal of 11552102421021 is 12012420125511.

11552102421021 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 210 + 2 + 421 + 0 + 21 = 666.

It is not a de Polignac number, because 11552102421021 - 2² = 11552102421017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552102421221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9043405 + ... + 10241453.

It is an arithmetic number, because the mean of its divisors is an integer number (543974602500).

Almost surely, 2^{11552102421021} is an apocalyptic number.

It is an amenable number.

11552102421021 is a deficient number, since it is larger than the sum of its proper divisors (5855084858979).

11552102421021 is a wasteful number, since it uses less digits than its factorization.

11552102421021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204170 (or 1204164 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

Adding to 11552102421021 its reverse (12012420125511), we get a palindrome (23564522546532).

The spelling of 11552102421021 in words is "eleven trillion, five hundred fifty-two billion, one hundred two million, four hundred twenty-one thousand, twenty-one".