72012101213 has 8 divisors (see below), whose sum is σ = 78162137088. Its totient is φ = 65949300144.

The previous prime is 72012101209. The next prime is 72012101221. The reversal of 72012101213 is 31210121027.

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

It is not a de Polignac number, because 72012101213 - 2² = 72012101209 is a prime.

It is a super-2 number, since 2×72012101213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72012101113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21806981 + ... + 21810282.

It is an arithmetic number, because the mean of its divisors is an integer number (9770267136).

Almost surely, 2^72012101213 is an apocalyptic number.

It is an amenable number.

72012101213 is a deficient number, since it is larger than the sum of its proper divisors (6150035875).

72012101213 is a wasteful number, since it uses less digits than its factorization.

72012101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43617403.

The product of its (nonzero) digits is 168, while the sum is 20.

The spelling of 72012101213 in words is "seventy-two billion, twelve million, one hundred one thousand, two hundred thirteen".