212112221110102 has 64 divisors (see below), whose sum is σ = 354117744000000. Its totient is φ = 94869502221312.

The previous prime is 212112221110063. The next prime is 212112221110129. The reversal of 212112221110102 is 201011122211212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 212112221110102.

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, 63051273 + ... + 66330139.

It is an arithmetic number, because the mean of its divisors is an integer number (5533089750000).

Almost surely, 2^{212112221110102} is an apocalyptic number.

212112221110102 is a deficient number, since it is larger than the sum of its proper divisors (142005522889898).

212112221110102 is a wasteful number, since it uses less digits than its factorization.

212112221110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280213.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212112221110102 its reverse (201011122211212), we get a palindrome (413123343321314).

The spelling of 212112221110102 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, one hundred two".