22122111121020 has 72 divisors (see below), whose sum is σ = 67190546981376. Its totient is φ = 5891597991552.

The previous prime is 22122111121003. The next prime is 22122111121037. The reversal of 22122111121020 is 2012111122122.

22122111121020 is a `hidden beast` number, since 2 + 212 + 211 + 11 + 210 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (22122111121003) and next prime (22122111121037).

It is a super-2 number, since 2×22122111121020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22122111120984 and 22122111121002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79356732 + ... + 79635011.

It is an arithmetic number, because the mean of its divisors is an integer number (933202041408).

Almost surely, 2^{22122111121020} is an apocalyptic number.

22122111121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122111121020 is an abundant number, since it is smaller than the sum of its proper divisors (45068435860356).

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

22122111121020 is a wasteful number, since it uses less digits than its factorization.

22122111121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158992531 (or 158992526 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22122111121020 its reverse (2012111122122), we get a palindrome (24134222243142).

The spelling of 22122111121020 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, twenty".