213111111120 has 160 divisors (see below), whose sum is σ = 692937220608. Its totient is φ = 54117126144.

The previous prime is 213111111091. The next prime is 213111111131. The reversal of 213111111120 is 21111111312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 213111111120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162052 + ... + 672668.

Almost surely, 2^213111111120 is an apocalyptic number.

213111111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213111111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346468610304).

213111111120 is an abundant number, since it is smaller than the sum of its proper divisors (479826109488).

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

213111111120 is a wasteful number, since it uses less digits than its factorization.

213111111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510717 (or 510711 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 213111111120 its reverse (21111111312), we get a palindrome (234222222432).

The spelling of 213111111120 in words is "two hundred thirteen billion, one hundred eleven million, one hundred eleven thousand, one hundred twenty".