21043031102 has 16 divisors (see below), whose sum is σ = 32241300480. Its totient is φ = 10296002808.

The previous prime is 21043031099. The next prime is 21043031117. The reversal of 21043031102 is 20113034012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741743 + ... + 769589.

It is an arithmetic number, because the mean of its divisors is an integer number (2015081280).

Almost surely, 2^21043031102 is an apocalyptic number.

21043031102 is a deficient number, since it is larger than the sum of its proper divisors (11198269378).

21043031102 is a wasteful number, since it uses less digits than its factorization.

21043031102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35935.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21043031102 its reverse (20113034012), we get a palindrome (41156065114).

The spelling of 21043031102 in words is "twenty-one billion, forty-three million, thirty-one thousand, one hundred two".