21000113033210 has 16 divisors (see below), whose sum is σ = 37861867750536. Its totient is φ = 8386342037568.

The previous prime is 21000113033189. The next prime is 21000113033279. The reversal of 21000113033210 is 1233031100012.

It can be written as a sum of positive squares in 4 ways, for example, as 3425915951929 + 17574197081281 = 1850923^2 + 4192159^2 .

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, 1712890529 + ... + 1712902788.

Almost surely, 2^{21000113033210} is an apocalyptic number.

21000113033210 is a deficient number, since it is larger than the sum of its proper divisors (16861754717326).

21000113033210 is a wasteful number, since it uses less digits than its factorization.

21000113033210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425793937.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21000113033210 its reverse (1233031100012), we get a palindrome (22233144133222).

The spelling of 21000113033210 in words is "twenty-one trillion, one hundred thirteen million, thirty-three thousand, two hundred ten".