20211201220110 has 32 divisors (see below), whose sum is σ = 48586013287200. Its totient is φ = 5380861396608.

The previous prime is 20211201220061. The next prime is 20211201220181. The reversal of 20211201220110 is 1102210211202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20211201220110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549497685 + ... + 549534464.

It is an arithmetic number, because the mean of its divisors is an integer number (1518312915225).

Almost surely, 2^{20211201220110} is an apocalyptic number.

20211201220110 is an abundant number, since it is smaller than the sum of its proper divisors (28374812067090).

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

20211201220110 is a wasteful number, since it uses less digits than its factorization.

20211201220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099032772.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20211201220110 its reverse (1102210211202), we get a palindrome (21313411431312).

The spelling of 20211201220110 in words is "twenty trillion, two hundred eleven billion, two hundred one million, two hundred twenty thousand, one hundred ten".