21200103331 has 32 divisors (see below), whose sum is σ = 24633907200. Its totient is φ = 18063648000.

The previous prime is 21200103319. The next prime is 21200103359. The reversal of 21200103331 is 13330100212.

It is a cyclic number.

It is not a de Polignac number, because 21200103331 - 2⁷ = 21200103203 is a prime.

It is a super-2 number, since 2×21200103331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21200103371) 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, 1937905 + ... + 1948813.

It is an arithmetic number, because the mean of its divisors is an integer number (769809600).

Almost surely, 2^21200103331 is an apocalyptic number.

21200103331 is a deficient number, since it is larger than the sum of its proper divisors (3433803869).

21200103331 is a wasteful number, since it uses less digits than its factorization.

21200103331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11131.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21200103331 its reverse (13330100212), we get a palindrome (34530203543).

The spelling of 21200103331 in words is "twenty-one billion, two hundred million, one hundred three thousand, three hundred thirty-one".