21012000102002 has 32 divisors (see below), whose sum is σ = 38793659184000. Its totient is φ = 8311952233728.

The previous prime is 21012000101969. The next prime is 21012000102029. The reversal of 21012000102002 is 20020100021012.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 263927 + ... + 6487962.

It is an arithmetic number, because the mean of its divisors is an integer number (1212301849500).

Almost surely, 2^{21012000102002} is an apocalyptic number.

21012000102002 is a deficient number, since it is larger than the sum of its proper divisors (17781659081998).

21012000102002 is a wasteful number, since it uses less digits than its factorization.

21012000102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6769010.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21012000102002 its reverse (20020100021012), we get a palindrome (41032100123014).

The spelling of 21012000102002 in words is "twenty-one trillion, twelve billion, one hundred two thousand, two".