712221522 has 16 divisors (see below), whose sum is σ = 1426666080. Its totient is φ = 237036672.

The previous prime is 712221481. The next prime is 712221533. The reversal of 712221522 is 225122217.

712221522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 712221492 and 712221501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88447 + ... + 96162.

It is an arithmetic number, because the mean of its divisors is an integer number (89166630).

Almost surely, 2^712221522 is an apocalyptic number.

712221522 is an abundant number, since it is smaller than the sum of its proper divisors (714444558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

712221522 is a wasteful number, since it uses less digits than its factorization.

712221522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185257.

The product of its digits is 1120, while the sum is 24.

The square root of 712221522 is about 26687.4787494061. The cubic root of 712221522 is about 893.0416161870.

Adding to 712221522 its reverse (225122217), we get a palindrome (937343739).

The spelling of 712221522 in words is "seven hundred twelve million, two hundred twenty-one thousand, five hundred twenty-two".