212111210102 has 32 divisors (see below), whose sum is σ = 369412506144. Its totient is φ = 90272563200.

The previous prime is 212111210071. The next prime is 212111210177. The reversal of 212111210102 is 201012111212.

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, 1397099 + ... + 1541462.

It is an arithmetic number, because the mean of its divisors is an integer number (11544140817).

Almost surely, 2^212111210102 is an apocalyptic number.

212111210102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212111210102 is a deficient number, since it is larger than the sum of its proper divisors (157301296042).

212111210102 is a wasteful number, since it uses less digits than its factorization.

212111210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938784.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212111210102 its reverse (201012111212), we get a palindrome (413123321314).

The spelling of 212111210102 in words is "two hundred twelve billion, one hundred eleven million, two hundred ten thousand, one hundred two".