21211010310 has 64 divisors (see below), whose sum is σ = 58483482624. Its totient is φ = 4822838400.

The previous prime is 21211010269. The next prime is 21211010329. The reversal of 21211010310 is 1301011212.

It is a super-2 number, since 2×21211010310² (a number of 21 digits) contains 22 as substring.

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, 224301 + ... + 304520.

It is an arithmetic number, because the mean of its divisors is an integer number (913804416).

Almost surely, 2^21211010310 is an apocalyptic number.

21211010310 is an abundant number, since it is smaller than the sum of its proper divisors (37272472314).

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

21211010310 is a wasteful number, since it uses less digits than its factorization.

21211010310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529029.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21211010310 its reverse (1301011212), we get a palindrome (22512021522).

The spelling of 21211010310 in words is "twenty-one billion, two hundred eleven million, ten thousand, three hundred ten".