21112020332130 has 128 divisors (see below), whose sum is σ = 62365441356288. Its totient is φ = 4454134198272.

The previous prime is 21112020332129. The next prime is 21112020332153. The reversal of 21112020332130 is 3123302021112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21112020332097 and 21112020332106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46503514 + ... + 46955306.

It is an arithmetic number, because the mean of its divisors is an integer number (487230010596).

Almost surely, 2^{21112020332130} is an apocalyptic number.

21112020332130 is an abundant number, since it is smaller than the sum of its proper divisors (41253421024158).

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

21112020332130 is a wasteful number, since it uses less digits than its factorization.

21112020332130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468940.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21112020332130 its reverse (3123302021112), we get a palindrome (24235322353242).

The spelling of 21112020332130 in words is "twenty-one trillion, one hundred twelve billion, twenty million, three hundred thirty-two thousand, one hundred thirty".