2122112112220 has 12 divisors (see below), whose sum is σ = 4456435435704. Its totient is φ = 848844844880.

The previous prime is 2122112112217. The next prime is 2122112112221. The reversal of 2122112112220 is 222112112212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122112112221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53052802786 + ... + 53052802825.

It is an arithmetic number, because the mean of its divisors is an integer number (371369619642).

Almost surely, 2^{2122112112220} is an apocalyptic number.

2122112112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122112112220 is an abundant number, since it is smaller than the sum of its proper divisors (2334323323484).

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

2122112112220 is a wasteful number, since it uses less digits than its factorization.

2122112112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106105605620 (or 106105605618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2122112112220 its reverse (222112112212), we get a palindrome (2344224224432).

The spelling of 2122112112220 in words is "two trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twelve thousand, two hundred twenty".