2112209988 has 48 divisors (see below), whose sum is σ = 5666325504. Its totient is φ = 599870880.

The previous prime is 2112209977. The next prime is 2112209989. The reversal of 2112209988 is 8899022112.

It is a super-2 number, since 2×2112209988² = 8922862066813920288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2112209989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61258 + ... + 89313.

It is an arithmetic number, because the mean of its divisors is an integer number (118048448).

Almost surely, 2^2112209988 is an apocalyptic number.

2112209988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2112209988 is an abundant number, since it is smaller than the sum of its proper divisors (3554115516).

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

2112209988 is a wasteful number, since it uses less digits than its factorization.

2112209988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150752 (or 150750 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 2112209988 is about 45958.7857541950. The cubic root of 2112209988 is about 1283.0562522886.

The spelling of 2112209988 in words is "two billion, one hundred twelve million, two hundred nine thousand, nine hundred eighty-eight".