21332111010 has 32 divisors (see below), whose sum is σ = 58510933632. Its totient is φ = 4875911040.

The previous prime is 21332110973. The next prime is 21332111023. The reversal of 21332111010 is 1011123312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50790531 + ... + 50790950.

It is an arithmetic number, because the mean of its divisors is an integer number (1828466676).

Almost surely, 2^21332111010 is an apocalyptic number.

21332111010 is an abundant number, since it is smaller than the sum of its proper divisors (37178822622).

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

21332111010 is a wasteful number, since it uses less digits than its factorization.

21332111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101581498.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21332111010 its reverse (1011123312), we get a palindrome (22343234322).

The spelling of 21332111010 in words is "twenty-one billion, three hundred thirty-two million, one hundred eleven thousand, ten".