22012022121220 has 192 divisors, whose sum is σ = 49637847168000. Its totient is φ = 8170361192448.

The previous prime is 22012022121157. The next prime is 22012022121233. The reversal of 22012022121220 is 2212122021022.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6460820757 + ... + 6460824163.

It is an arithmetic number, because the mean of its divisors is an integer number (258530454000).

Almost surely, 2^{22012022121220} is an apocalyptic number.

22012022121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012022121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24818923584000).

22012022121220 is an abundant number, since it is smaller than the sum of its proper divisors (27625825046780).

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

22012022121220 is a wasteful number, since it uses less digits than its factorization.

22012022121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382 (or 4380 counting only the distinct ones).

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

Adding to 22012022121220 its reverse (2212122021022), we get a palindrome (24224144142242).

The spelling of 22012022121220 in words is "twenty-two trillion, twelve billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty".