212111110102 has 32 divisors (see below), whose sum is σ = 328123065600. Its totient is φ = 102777685920.

The previous prime is 212111110087. The next prime is 212111110111. The reversal of 212111110102 is 201011111212.

It is a happy number.

It is a super-2 number, since 2×212111110102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8384152 + ... + 8409412.

It is an arithmetic number, because the mean of its divisors is an integer number (10253845800).

Almost surely, 2^212111110102 is an apocalyptic number.

212111110102 is a deficient number, since it is larger than the sum of its proper divisors (116011955498).

212111110102 is a wasteful number, since it uses less digits than its factorization.

212111110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26068.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 212111110102 its reverse (201011111212), we get a palindrome (413122221314).

It can be divided in two parts, 212111110 and 102, that added together give a palindrome (212111212).

The spelling of 212111110102 in words is "two hundred twelve billion, one hundred eleven million, one hundred ten thousand, one hundred two".