712006662221 has 4 divisors (see below), whose sum is σ = 712588843872. Its totient is φ = 711424480572.

The previous prime is 712006662209. The next prime is 712006662307. The reversal of 712006662221 is 122266600217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-712006662221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712006662121) 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, 291088991 + ... + 291091436.

It is an arithmetic number, because the mean of its divisors is an integer number (178147210968).

Almost surely, 2^712006662221 is an apocalyptic number.

It is an amenable number.

712006662221 is a deficient number, since it is larger than the sum of its proper divisors (582181651).

712006662221 is a wasteful number, since it uses less digits than its factorization.

712006662221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582181650.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 712006662221 in words is "seven hundred twelve billion, six million, six hundred sixty-two thousand, two hundred twenty-one".