21012210100010 has 8 divisors (see below), whose sum is σ = 37821978180036. Its totient is φ = 8404884040000.

The previous prime is 21012210100009. The next prime is 21012210100097. The reversal of 21012210100010 is 1000101221012.

It can be written as a sum of positive squares in 2 ways, for example, as 18716188140841 + 2296021959169 = 4326221^2 + 1515263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21012210099964 and 21012210100000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050610504991 + ... + 1050610505010.

Almost surely, 2^{21012210100010} is an apocalyptic number.

21012210100010 is a deficient number, since it is larger than the sum of its proper divisors (16809768080026).

21012210100010 is a wasteful number, since it uses less digits than its factorization.

21012210100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101221010008.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21012210100010 its reverse (1000101221012), we get a palindrome (22012311321022).

The spelling of 21012210100010 in words is "twenty-one trillion, twelve billion, two hundred ten million, one hundred thousand, ten".