213121422430012 has 48 divisors (see below), whose sum is σ = 376180000124544. Its totient is φ = 105643050552000.

The previous prime is 213121422429917. The next prime is 213121422430043. The reversal of 213121422430012 is 210034224121312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5898557187 + ... + 5898593317.

It is an arithmetic number, because the mean of its divisors is an integer number (7837083335928).

Almost surely, 2^{213121422430012} is an apocalyptic number.

It is an amenable number.

213121422430012 is a deficient number, since it is larger than the sum of its proper divisors (163058577694532).

213121422430012 is a wasteful number, since it uses less digits than its factorization.

213121422430012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47050 (or 47048 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 213121422430012 its reverse (210034224121312), we get a palindrome (423155646551324).

The spelling of 213121422430012 in words is "two hundred thirteen trillion, one hundred twenty-one billion, four hundred twenty-two million, four hundred thirty thousand, twelve".