20100021211010 has 64 divisors (see below), whose sum is σ = 40308671299680. Its totient is φ = 7165275801600.

The previous prime is 20100021211003. The next prime is 20100021211051. The reversal of 20100021211010 is 1011212000102.

It can be written as a sum of positive squares in 16 ways, for example, as 2671809277489 + 17428211933521 = 1634567^2 + 4174711^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20100021210982 and 20100021211000.

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, 82867910 + ... + 83110110.

Almost surely, 2^{20100021211010} is an apocalyptic number.

20100021211010 is an abundant number, since it is smaller than the sum of its proper divisors (20208650088670).

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

20100021211010 is a wasteful number, since it uses less digits than its factorization.

20100021211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264263.

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

Adding to 20100021211010 its reverse (1011212000102), we get a palindrome (21111233211112).

The spelling of 20100021211010 in words is "twenty trillion, one hundred billion, twenty-one million, two hundred eleven thousand, ten".