20100021221210 has 64 divisors (see below), whose sum is σ = 42060120480000. Its totient is φ = 6773032581120.

The previous prime is 20100021221191. The next prime is 20100021221239. The reversal of 20100021221210 is 1212212000102.

20100021221210 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 3448817 + ... + 7217643.

It is an arithmetic number, because the mean of its divisors is an integer number (657189382500).

Almost surely, 2^{20100021221210} is an apocalyptic number.

20100021221210 is an abundant number, since it is smaller than the sum of its proper divisors (21960099258790).

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

20100021221210 is a wasteful number, since it uses less digits than its factorization.

20100021221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770151.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20100021221210 its reverse (1212212000102), we get a palindrome (21312233221312).

The spelling of 20100021221210 in words is "twenty trillion, one hundred billion, twenty-one million, two hundred twenty-one thousand, two hundred ten".