213232122122 has 4 divisors (see below), whose sum is σ = 319848183186. Its totient is φ = 106616061060.

The previous prime is 213232122101. The next prime is 213232122127. The reversal of 213232122122 is 221221232312.

It is a happy number.

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., 210663558361 + 2568563761 = 458981^2 + 50681^2 .

It is not an unprimeable number, because it can be changed into a prime (213232122127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53308030529 + ... + 53308030532.

Almost surely, 2^213232122122 is an apocalyptic number.

213232122122 is a deficient number, since it is larger than the sum of its proper divisors (106616061064).

213232122122 is a wasteful number, since it uses less digits than its factorization.

213232122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106616061063.

The product of its digits is 1152, while the sum is 23.

Adding to 213232122122 its reverse (221221232312), we get a palindrome (434453354434).

The spelling of 213232122122 in words is "two hundred thirteen billion, two hundred thirty-two million, one hundred twenty-two thousand, one hundred twenty-two".