213112020122 has 8 divisors (see below), whose sum is σ = 320676447636. Its totient is φ = 106219870912.

The previous prime is 213112020119. The next prime is 213112020203. The reversal of 213112020122 is 221020211312.

It can be written as a sum of positive squares in 2 ways, for example, as 208292744881 + 4819275241 = 456391^2 + 69421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×213112020122⁴ (a number of 46 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213112020122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168068783 + ... + 168070050.

Almost surely, 2^213112020122 is an apocalyptic number.

213112020122 is a deficient number, since it is larger than the sum of its proper divisors (107564427514).

213112020122 is a wasteful number, since it uses less digits than its factorization.

213112020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336139152.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 213112020122 its reverse (221020211312), we get a palindrome (434132231434).

The spelling of 213112020122 in words is "two hundred thirteen billion, one hundred twelve million, twenty thousand, one hundred twenty-two".