213020232122 has 4 divisors (see below), whose sum is σ = 319530348186. Its totient is φ = 106510116060.

The previous prime is 213020232119. The next prime is 213020232151. The reversal of 213020232122 is 221232020312.

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., 212346777721 + 673454401 = 460811^2 + 25951^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213020232094 and 213020232103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53255058029 + ... + 53255058032.

Almost surely, 2^213020232122 is an apocalyptic number.

213020232122 is a deficient number, since it is larger than the sum of its proper divisors (106510116064).

213020232122 is a wasteful number, since it uses less digits than its factorization.

213020232122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106510116063.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 213020232122 its reverse (221232020312), we get a palindrome (434252252434).

The spelling of 213020232122 in words is "two hundred thirteen billion, twenty million, two hundred thirty-two thousand, one hundred twenty-two".