2122100100220 has 48 divisors (see below), whose sum is σ = 4722966783360. Its totient is φ = 798160794624.

The previous prime is 2122100100217. The next prime is 2122100100229. The reversal of 2122100100220 is 220010012212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2122100100220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122100100229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2555844 + ... + 3282763.

It is an arithmetic number, because the mean of its divisors is an integer number (98395141320).

Almost surely, 2^{2122100100220} is an apocalyptic number.

2122100100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122100100220 is an abundant number, since it is smaller than the sum of its proper divisors (2600866683140).

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

2122100100220 is a wasteful number, since it uses less digits than its factorization.

2122100100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5839702 (or 5839700 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2122100100220 its reverse (220010012212), we get a palindrome (2342110112432).

The spelling of 2122100100220 in words is "two trillion, one hundred twenty-two billion, one hundred million, one hundred thousand, two hundred twenty".