211113012 has 48 divisors (see below), whose sum is σ = 538255872. Its totient is φ = 63869280.

The previous prime is 211112999. The next prime is 211113013. The reversal of 211113012 is 210311112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211113013) 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, 128943 + ... + 130569.

It is an arithmetic number, because the mean of its divisors is an integer number (11213664).

Almost surely, 2^211113012 is an apocalyptic number.

211113012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211113012 is an abundant number, since it is smaller than the sum of its proper divisors (327142860).

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

211113012 is a wasteful number, since it uses less digits than its factorization.

211113012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2626 counting only the distinct ones).

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

The square root of 211113012 is about 14529.7285590612. The cubic root of 211113012 is about 595.4404497157.

Adding to 211113012 its reverse (210311112), we get a palindrome (421424124).

The spelling of 211113012 in words is "two hundred eleven million, one hundred thirteen thousand, twelve".