21200103130 has 16 divisors (see below), whose sum is σ = 40404902760. Its totient is φ = 7981215232.

The previous prime is 21200103101. The next prime is 21200103161. The reversal of 21200103130 is 3130100212.

It can be written as a sum of positive squares in 4 ways, for example, as 14472330601 + 6727772529 = 120301^2 + 82023^2 .

It is a super-3 number, since 3×21200103130³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21200103130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62353075 + ... + 62353414.

Almost surely, 2^21200103130 is an apocalyptic number.

21200103130 is a deficient number, since it is larger than the sum of its proper divisors (19204799630).

21200103130 is a wasteful number, since it uses less digits than its factorization.

21200103130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124706513.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21200103130 its reverse (3130100212), we get a palindrome (24330203342).

The spelling of 21200103130 in words is "twenty-one billion, two hundred million, one hundred three thousand, one hundred thirty".