2112110201220 has 48 divisors (see below), whose sum is σ = 5914002060288. Its totient is φ = 563220482560.

The previous prime is 2112110201209. The next prime is 2112110201261. The reversal of 2112110201220 is 221020112112.

It is a super-2 number, since 2×2112110201220² (a number of 25 digits) contains 22 as substring.

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 2112110201220.

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, 4124140 + ... + 4607900.

It is an arithmetic number, because the mean of its divisors is an integer number (123208376256).

Almost surely, 2^{2112110201220} is an apocalyptic number.

2112110201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112110201220 is an abundant number, since it is smaller than the sum of its proper divisors (3801891859068).

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

2112110201220 is a wasteful number, since it uses less digits than its factorization.

2112110201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556540 (or 556538 counting only the distinct ones).

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

Adding to 2112110201220 its reverse (221020112112), we get a palindrome (2333130313332).

The spelling of 2112110201220 in words is "two trillion, one hundred twelve billion, one hundred ten million, two hundred one thousand, two hundred twenty".