2122220111988 has 96 divisors (see below), whose sum is σ = 5196182745600. Its totient is φ = 673345391616.

The previous prime is 2122220111987. The next prime is 2122220111989. The reversal of 2122220111988 is 8891110222212.

It is an interprime number because it is at equal distance from previous prime (2122220111987) and next prime (2122220111989).

It is a super-2 number, since 2×2122220111988² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122220111983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49832368 + ... + 49874936.

It is an arithmetic number, because the mean of its divisors is an integer number (54126903600).

Almost surely, 2^{2122220111988} is an apocalyptic number.

It is an amenable number.

2122220111988 is an abundant number, since it is smaller than the sum of its proper divisors (3073962633612).

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

2122220111988 is a wasteful number, since it uses less digits than its factorization.

2122220111988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45049 (or 45047 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The spelling of 2122220111988 in words is "two trillion, one hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, nine hundred eighty-eight".