2112022100 has 36 divisors (see below), whose sum is σ = 4588018848. Its totient is φ = 843900000.

The previous prime is 2112022091. The next prime is 2112022109. The reversal of 2112022100 is 12202112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2112022091) and next prime (2112022109).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112022109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86225 + ... + 107975.

It is an arithmetic number, because the mean of its divisors is an integer number (127444968).

Almost surely, 2^2112022100 is an apocalyptic number.

2112022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112022100 is an abundant number, since it is smaller than the sum of its proper divisors (2475996748).

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

2112022100 is a wasteful number, since it uses less digits than its factorization.

2112022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22736 (or 22729 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2112022100 is about 45956.7416164375. The cubic root of 2112022100 is about 1283.0182071411.

Adding to 2112022100 its reverse (12202112), we get a palindrome (2124224212).

The spelling of 2112022100 in words is "two billion, one hundred twelve million, twenty-two thousand, one hundred".