21112020001002 has 64 divisors (see below), whose sum is σ = 48280690483200. Its totient is φ = 6028925904000.

The previous prime is 21112020000989. The next prime is 21112020001073. The reversal of 21112020001002 is 20010002021112.

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 31 ways as a sum of consecutive naturals, for example, 952740399 + ... + 952762557.

It is an arithmetic number, because the mean of its divisors is an integer number (754385788800).

Almost surely, 2^{21112020001002} is an apocalyptic number.

21112020001002 is an abundant number, since it is smaller than the sum of its proper divisors (27168670482198).

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

21112020001002 is a wasteful number, since it uses less digits than its factorization.

21112020001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32731.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21112020001002 its reverse (20010002021112), we get a palindrome (41122022022114).

The spelling of 21112020001002 in words is "twenty-one trillion, one hundred twelve billion, twenty million, one thousand, two".