2111311200 has 72 divisors (see below), whose sum is σ = 6872325768. Its totient is φ = 563015680.

The previous prime is 2111311177. The next prime is 2111311219. The reversal of 2111311200 is 21131112.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 437457 + ... + 442256.

It is an arithmetic number, because the mean of its divisors is an integer number (95448969).

Almost surely, 2^2111311200 is an apocalyptic number.

2111311200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111311200 is an abundant number, since it is smaller than the sum of its proper divisors (4761014568).

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

2111311200 is a wasteful number, since it uses less digits than its factorization.

2111311200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879736 (or 879723 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2111311200 is about 45949.0065180957. The cubic root of 2111311200 is about 1282.8742376882.

Adding to 2111311200 its reverse (21131112), we get a palindrome (2132442312).

The spelling of 2111311200 in words is "two billion, one hundred eleven million, three hundred eleven thousand, two hundred".