212112022122220 has 48 divisors (see below), whose sum is σ = 487865333442816. Its totient is φ = 76824347000000.

The previous prime is 212112022122193. The next prime is 212112022122233. The reversal of 212112022122220 is 22221220211212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 212112022122191 and 212112022122200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1920553456 + ... + 1920663895.

It is an arithmetic number, because the mean of its divisors is an integer number (10163861113392).

Almost surely, 2^{212112022122220} is an apocalyptic number.

212112022122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212112022122220 is an abundant number, since it is smaller than the sum of its proper divisors (275753311320596).

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

212112022122220 is a wasteful number, since it uses less digits than its factorization.

212112022122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841217622 (or 3841217620 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212112022122220 its reverse (22221220211212), we get a palindrome (234333242333432).

The spelling of 212112022122220 in words is "two hundred twelve trillion, one hundred twelve billion, twenty-two million, one hundred twenty-two thousand, two hundred twenty".