21001013301010 has 64 divisors (see below), whose sum is σ = 38974868047584. Its totient is φ = 8142397286400.

The previous prime is 21001013300987. The next prime is 21001013301077. The reversal of 21001013301010 is 1010331010012.

It can be written as a sum of positive squares in 16 ways, for example, as 29822521 + 21000983478489 = 5461^2 + 4582683^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 954016764 + ... + 954038776.

Almost surely, 2^{21001013301010} is an apocalyptic number.

21001013301010 is a deficient number, since it is larger than the sum of its proper divisors (17973854746574).

21001013301010 is a wasteful number, since it uses less digits than its factorization.

21001013301010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37039.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 21001013301010 its reverse (1010331010012), we get a palindrome (22011344311022).

The spelling of 21001013301010 in words is "twenty-one trillion, one billion, thirteen million, three hundred one thousand, ten".