21012102231002 has 16 divisors (see below), whose sum is σ = 32105784559680. Its totient is φ = 10311979363392.

The previous prime is 21012102230989. The next prime is 21012102231023. The reversal of 21012102231002 is 20013220121012.

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 7 ways as a sum of consecutive naturals, for example, 451306352 + ... + 451352907.

It is an arithmetic number, because the mean of its divisors is an integer number (2006611534980).

Almost surely, 2^{21012102231002} is an apocalyptic number.

21012102231002 is a deficient number, since it is larger than the sum of its proper divisors (11093682328678).

21012102231002 is a wasteful number, since it uses less digits than its factorization.

21012102231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902659477.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21012102231002 its reverse (20013220121012), we get a palindrome (41025322352014).

The spelling of 21012102231002 in words is "twenty-one trillion, twelve billion, one hundred two million, two hundred thirty-one thousand, two".