210111210012 has 24 divisors (see below), whose sum is σ = 534828534912. Its totient is φ = 63670063600.

The previous prime is 210111209993. The next prime is 210111210013. The reversal of 210111210012 is 210012111012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 210111210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111210013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795875664 + ... + 795875927.

It is an arithmetic number, because the mean of its divisors is an integer number (22284522288).

Almost surely, 2^210111210012 is an apocalyptic number.

210111210012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210111210012 is an abundant number, since it is smaller than the sum of its proper divisors (324717324900).

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

210111210012 is a wasteful number, since it uses less digits than its factorization.

210111210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591751609 (or 1591751607 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210111210012 its reverse (210012111012), we get a palindrome (420123321024).

The spelling of 210111210012 in words is "two hundred ten billion, one hundred eleven million, two hundred ten thousand, twelve".