212131223102 has 4 divisors (see below), whose sum is σ = 318196834656. Its totient is φ = 106065611550.

The previous prime is 212131223099. The next prime is 212131223119. The reversal of 212131223102 is 201322131212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53032805774 + ... + 53032805777.

It is an arithmetic number, because the mean of its divisors is an integer number (79549208664).

Almost surely, 2^212131223102 is an apocalyptic number.

212131223102 is a deficient number, since it is larger than the sum of its proper divisors (106065611554).

212131223102 is a wasteful number, since it uses less digits than its factorization.

212131223102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106065611553.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 212131223102 its reverse (201322131212), we get a palindrome (413453354314).

The spelling of 212131223102 in words is "two hundred twelve billion, one hundred thirty-one million, two hundred twenty-three thousand, one hundred two".