213122012122004 has 12 divisors (see below), whose sum is σ = 373041432991584. Its totient is φ = 106538745552984.

The previous prime is 213122012122003. The next prime is 213122012122007. The reversal of 213122012122004 is 400221210221312.

213122012122004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122012122003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5565105464 + ... + 5565143759.

It is an arithmetic number, because the mean of its divisors is an integer number (31086786082632).

Almost surely, 2^{213122012122004} is an apocalyptic number.

It is an amenable number.

213122012122004 is a deficient number, since it is larger than the sum of its proper divisors (159919420869580).

213122012122004 is a wasteful number, since it uses less digits than its factorization.

213122012122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11130254014 (or 11130254012 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 213122012122004 its reverse (400221210221312), we get a palindrome (613343222343316).

The spelling of 213122012122004 in words is "two hundred thirteen trillion, one hundred twenty-two billion, twelve million, one hundred twenty-two thousand, four".