20110221121210 has 64 divisors (see below), whose sum is σ = 41979098620800. Its totient is φ = 6859329696000.

The previous prime is 20110221121189. The next prime is 20110221121261. The reversal of 20110221121210 is 1212112201102.

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, 47423145 + ... + 47845324.

It is an arithmetic number, because the mean of its divisors is an integer number (655923415950).

Almost surely, 2^{20110221121210} is an apocalyptic number.

20110221121210 is an abundant number, since it is smaller than the sum of its proper divisors (21868877499590).

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

20110221121210 is a wasteful number, since it uses less digits than its factorization.

20110221121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95268607.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20110221121210 its reverse (1212112201102), we get a palindrome (21322333322312).

It can be divided in two parts, 201102 and 21121210, that added together give a palindrome (21322312).

The spelling of 20110221121210 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred ten".