213231200122 has 4 divisors (see below), whose sum is σ = 319846800186. Its totient is φ = 106615600060.

The previous prime is 213231200099. The next prime is 213231200137. The reversal of 213231200122 is 221002132312.

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

It can be written as a sum of positive squares in only one way, i.e., 135829839601 + 77401360521 = 368551^2 + 278211^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213231200122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53307800029 + ... + 53307800032.

Almost surely, 2^213231200122 is an apocalyptic number.

213231200122 is a deficient number, since it is larger than the sum of its proper divisors (106615600064).

213231200122 is a wasteful number, since it uses less digits than its factorization.

213231200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106615600063.

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

Adding to 213231200122 its reverse (221002132312), we get a palindrome (434233332434).

The spelling of 213231200122 in words is "two hundred thirteen billion, two hundred thirty-one million, two hundred thousand, one hundred twenty-two".