21302110102 has 64 divisors (see below), whose sum is σ = 40670429184. Its totient is φ = 8140331520.

The previous prime is 21302110007. The next prime is 21302110139. The reversal of 21302110102 is 20101120312.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3342523 + ... + 3348889.

It is an arithmetic number, because the mean of its divisors is an integer number (635475456).

Almost surely, 2^21302110102 is an apocalyptic number.

21302110102 is a deficient number, since it is larger than the sum of its proper divisors (19368319082).

21302110102 is a wasteful number, since it uses less digits than its factorization.

21302110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21302110102 its reverse (20101120312), we get a palindrome (41403230414).

The spelling of 21302110102 in words is "twenty-one billion, three hundred two million, one hundred ten thousand, one hundred two".