2122220111990 has 72 divisors (see below), whose sum is σ = 4338656829360. Its totient is φ = 746821917600.

The previous prime is 2122220111989. The next prime is 2122220112007. The reversal of 2122220111990 is 991110222212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 250271 + ... + 2075349.

It is an arithmetic number, because the mean of its divisors is an integer number (60259122630).

Almost surely, 2^{2122220111990} is an apocalyptic number.

2122220111990 is an abundant number, since it is smaller than the sum of its proper divisors (2216436717370).

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

2122220111990 is a wasteful number, since it uses less digits than its factorization.

2122220111990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825170 (or 1825128 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 2122220111990 in words is "two trillion, one hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, nine hundred ninety".