2112255100 has 36 divisors (see below), whose sum is σ = 4853220624. Its totient is φ = 795201280.

The previous prime is 2112255031. The next prime is 2112255133. The reversal of 2112255100 is 15522112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 619552 + ... + 622951.

It is an arithmetic number, because the mean of its divisors is an integer number (134811684).

Almost surely, 2^2112255100 is an apocalyptic number.

2112255100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112255100 is an abundant number, since it is smaller than the sum of its proper divisors (2740965524).

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

2112255100 is a wasteful number, since it uses less digits than its factorization.

2112255100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242534 (or 1242527 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 2112255100 is about 45959.2765391275. The cubic root of 2112255100 is about 1283.0653866111.

Adding to 2112255100 its reverse (15522112), we get a palindrome (2127777212).

The spelling of 2112255100 in words is "two billion, one hundred twelve million, two hundred fifty-five thousand, one hundred".