21131121302032 has 20 divisors (see below), whose sum is σ = 46790340026176. Its totient is φ = 9056194843680.

The previous prime is 21131121302009. The next prime is 21131121302041. The reversal of 21131121302032 is 23020312113112.

It is a junction number, because it is equal to n+sod(n) for n = 21131121301994 and 21131121302012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94335362844 + ... + 94335363067.

Almost surely, 2^{21131121302032} is an apocalyptic number.

It is an amenable number.

21131121302032 is an abundant number, since it is smaller than the sum of its proper divisors (25659218724144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21131121302032 is a wasteful number, since it uses less digits than its factorization.

21131121302032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188670725926 (or 188670725920 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21131121302032 its reverse (23020312113112), we get a palindrome (44151433415144).

The spelling of 21131121302032 in words is "twenty-one trillion, one hundred thirty-one billion, one hundred twenty-one million, three hundred two thousand, thirty-two".