21311202110 has 16 divisors (see below), whose sum is σ = 41847451632. Its totient is φ = 7749528000.

The previous prime is 21311202103. The next prime is 21311202113. The reversal of 21311202110 is 1120211312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21311202113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96868991 + ... + 96869210.

It is an arithmetic number, because the mean of its divisors is an integer number (2615465727).

Almost surely, 2^21311202110 is an apocalyptic number.

21311202110 is a deficient number, since it is larger than the sum of its proper divisors (20536249522).

21311202110 is a wasteful number, since it uses less digits than its factorization.

21311202110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193738219.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21311202110 its reverse (1120211312), we get a palindrome (22431413422).

It can be divided in two parts, 21311202 and 110, that added together give a palindrome (21311312).

The spelling of 21311202110 in words is "twenty-one billion, three hundred eleven million, two hundred two thousand, one hundred ten".