22012212200220 has 144 divisors (see below), whose sum is σ = 74809071294048. Its totient is φ = 5192069690880.

The previous prime is 22012212200191. The next prime is 22012212200221. The reversal of 22012212200220 is 2200221221022.

22012212200220 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 221 + 220 + 0 + 220 = 666.

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 = 22012212200193 and 22012212200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012212200221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150160239 + ... + 150306758.

It is an arithmetic number, because the mean of its divisors is an integer number (519507439542).

Almost surely, 2^{22012212200220} is an apocalyptic number.

22012212200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012212200220 is an abundant number, since it is smaller than the sum of its proper divisors (52796859093828).

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

22012212200220 is a wasteful number, since it uses less digits than its factorization.

22012212200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300467060 (or 300467055 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22012212200220 its reverse (2200221221022), we get a palindrome (24212433421242).

The spelling of 22012212200220 in words is "twenty-two trillion, twelve billion, two hundred twelve million, two hundred thousand, two hundred twenty".