212321021302 has 64 divisors (see below), whose sum is σ = 356257440000. Its totient is φ = 94293445248.

The previous prime is 212321021261. The next prime is 212321021323. The reversal of 212321021302 is 203120123212.

It is a self number, because there is not a number n which added to its sum of digits gives 212321021302.

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, 13870449 + ... + 13885747.

It is an arithmetic number, because the mean of its divisors is an integer number (5566522500).

Almost surely, 2^212321021302 is an apocalyptic number.

212321021302 is a deficient number, since it is larger than the sum of its proper divisors (143936418698).

212321021302 is a wasteful number, since it uses less digits than its factorization.

212321021302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15565.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212321021302 its reverse (203120123212), we get a palindrome (415441144514).

The spelling of 212321021302 in words is "two hundred twelve billion, three hundred twenty-one million, twenty-one thousand, three hundred two".