21101310010 has 64 divisors (see below), whose sum is σ = 44428331520. Its totient is φ = 7130373120.

The previous prime is 21101310001. The next prime is 21101310011. The reversal of 21101310010 is 1001310112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (21101310011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76312 + ... + 219148.

It is an arithmetic number, because the mean of its divisors is an integer number (694192680).

Almost surely, 2^21101310010 is an apocalyptic number.

21101310010 is an abundant number, since it is smaller than the sum of its proper divisors (23327021510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21101310010 is a wasteful number, since it uses less digits than its factorization.

21101310010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142951.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 21101310010 its reverse (1001310112), we get a palindrome (22102620122).

The spelling of 21101310010 in words is "twenty-one billion, one hundred one million, three hundred ten thousand, ten".