213122113012 has 6 divisors (see below), whose sum is σ = 372963697778. Its totient is φ = 106561056504.

The previous prime is 213122113007. The next prime is 213122113013. The reversal of 213122113012 is 210311221312.

213122113012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 203397392016 + 9724720996 = 450996^2 + 98614^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122113013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26640264123 + ... + 26640264130.

Almost surely, 2^213122113012 is an apocalyptic number.

It is an amenable number.

213122113012 is a deficient number, since it is larger than the sum of its proper divisors (159841584766).

213122113012 is a wasteful number, since it uses less digits than its factorization.

213122113012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53280528257 (or 53280528255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 213122113012 its reverse (210311221312), we get a palindrome (423433334324).

The spelling of 213122113012 in words is "two hundred thirteen billion, one hundred twenty-two million, one hundred thirteen thousand, twelve".