21200110100010 has 48 divisors (see below), whose sum is σ = 55128996903240. Its totient is φ = 5652469294080.

The previous prime is 21200110100003. The next prime is 21200110100023. The reversal of 21200110100010 is 1000101100212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19364602673529 + 1835507426481 = 4400523^2 + 1354809^2 .

It is a super-3 number, since 3×21200110100010³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 21200110099965 and 21200110100001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18039711 + ... + 19178930.

Almost surely, 2^{21200110100010} is an apocalyptic number.

21200110100010 is an abundant number, since it is smaller than the sum of its proper divisors (33928886803230).

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

21200110100010 is a wasteful number, since it uses less digits than its factorization.

21200110100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37224983 (or 37224980 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 21200110100010 its reverse (1000101100212), we get a palindrome (22200211200222).

The spelling of 21200110100010 in words is "twenty-one trillion, two hundred billion, one hundred ten million, one hundred thousand, ten".