2222121201220 has 24 divisors (see below), whose sum is σ = 4667917036608. Its totient is φ = 888569906400.

The previous prime is 2222121201199. The next prime is 2222121201253. The reversal of 2222121201220 is 221021212222.

It is a super-2 number, since 2×2222121201220² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17345466 + ... + 17473105.

It is an arithmetic number, because the mean of its divisors is an integer number (194496543192).

Almost surely, 2^{2222121201220} is an apocalyptic number.

2222121201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222121201220 is an abundant number, since it is smaller than the sum of its proper divisors (2445795835388).

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

2222121201220 is a wasteful number, since it uses less digits than its factorization.

2222121201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34821771 (or 34821769 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2222121201220 its reverse (221021212222), we get a palindrome (2443142413442).

The spelling of 2222121201220 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred one thousand, two hundred twenty".