22212022220220 has 96 divisors (see below), whose sum is σ = 71079652740096. Its totient is φ = 5076949248000.

The previous prime is 22212022220183. The next prime is 22212022220257. The reversal of 22212022220220 is 2202222021222.

It is an interprime number because it is at equal distance from previous prime (22212022220183) and next prime (22212022220257).

It is a super-2 number, since 2×22212022220220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26872300 + ... + 27686540.

It is an arithmetic number, because the mean of its divisors is an integer number (740413049376).

Almost surely, 2^{22212022220220} is an apocalyptic number.

22212022220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212022220220 is an abundant number, since it is smaller than the sum of its proper divisors (48867630519876).

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

22212022220220 is a wasteful number, since it uses less digits than its factorization.

22212022220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879211 (or 879209 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 22212022220220 its reverse (2202222021222), we get a palindrome (24414244241442).

The spelling of 22212022220220 in words is "twenty-two trillion, two hundred twelve billion, twenty-two million, two hundred twenty thousand, two hundred twenty".