20112100110220 has 48 divisors (see below), whose sum is σ = 42867956355840. Its totient is φ = 7924367208384.

The previous prime is 20112100110203. The next prime is 20112100110257. The reversal of 20112100110220 is 2201100121102.

It is a super-2 number, since 2×20112100110220² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20112100110220.

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, 26868991 + ... + 27607369.

It is an arithmetic number, because the mean of its divisors is an integer number (893082424080).

Almost surely, 2^{20112100110220} is an apocalyptic number.

20112100110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112100110220 is an abundant number, since it is smaller than the sum of its proper divisors (22755856245620).

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

20112100110220 is a wasteful number, since it uses less digits than its factorization.

20112100110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758782 (or 758780 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20112100110220 its reverse (2201100121102), we get a palindrome (22313200231322).

The spelling of 20112100110220 in words is "twenty trillion, one hundred twelve billion, one hundred million, one hundred ten thousand, two hundred twenty".