21031133010 has 16 divisors (see below), whose sum is σ = 50474719296. Its totient is φ = 5608302128.

The previous prime is 21031133009. The next prime is 21031133029. The reversal of 21031133010 is 1033113012.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350518854 + ... + 350518913.

It is an arithmetic number, because the mean of its divisors is an integer number (3154669956).

Almost surely, 2^21031133010 is an apocalyptic number.

21031133010 is an abundant number, since it is smaller than the sum of its proper divisors (29443586286).

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

21031133010 is a wasteful number, since it uses less digits than its factorization.

21031133010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701037777.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21031133010 its reverse (1033113012), we get a palindrome (22064246022).

The spelling of 21031133010 in words is "twenty-one billion, thirty-one million, one hundred thirty-three thousand, ten".