212013123315 has 96 divisors (see below), whose sum is σ = 418044602880. Its totient is φ = 91169197056.

The previous prime is 212013123239. The next prime is 212013123317. The reversal of 212013123315 is 513321310212.

It is a happy number.

It is not a de Polignac number, because 212013123315 - 2¹⁴ = 212013106931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212013123317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31271596 + ... + 31278374.

It is an arithmetic number, because the mean of its divisors is an integer number (4354631280).

Almost surely, 2^212013123315 is an apocalyptic number.

212013123315 is a deficient number, since it is larger than the sum of its proper divisors (206031479565).

212013123315 is a wasteful number, since it uses less digits than its factorization.

212013123315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9321 (or 9314 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 212013123315 its reverse (513321310212), we get a palindrome (725334433527).

The spelling of 212013123315 in words is "two hundred twelve billion, thirteen million, one hundred twenty-three thousand, three hundred fifteen".