2111122100 has 36 divisors (see below), whose sum is σ = 4583185824. Its totient is φ = 844070880.

The previous prime is 2111122081. The next prime is 2111122147. The reversal of 2111122100 is 12211112.

It is a super-2 number, since 2×2111122100² = 8913673042216820000, which contains 22 as substring.

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, 359387 + ... + 365213.

Almost surely, 2^2111122100 is an apocalyptic number.

2111122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111122100 is an abundant number, since it is smaller than the sum of its proper divisors (2472063724).

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

2111122100 is a wasteful number, since it uses less digits than its factorization.

2111122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9464 (or 9457 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2111122100 is about 45946.9487561470. The cubic root of 2111122100 is about 1282.8359362508.

Adding to 2111122100 its reverse (12211112), we get a palindrome (2123333212).

The spelling of 2111122100 in words is "two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred".