212311122102 has 24 divisors (see below), whose sum is σ = 460034023800. Its totient is φ = 70766282880.

The previous prime is 212311122053. The next prime is 212311122103. The reversal of 212311122102 is 201221113212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212311122103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12352 + ... + 651747.

It is an arithmetic number, because the mean of its divisors is an integer number (19168084325).

Almost surely, 2^212311122102 is an apocalyptic number.

212311122102 is an abundant number, since it is smaller than the sum of its proper divisors (247722901698).

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

212311122102 is a wasteful number, since it uses less digits than its factorization.

212311122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681868 (or 681865 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212311122102 its reverse (201221113212), we get a palindrome (413532235314).

The spelling of 212311122102 in words is "two hundred twelve billion, three hundred eleven million, one hundred twenty-two thousand, one hundred two".