722212651 has 2 divisors, whose sum is σ = 722212652. Its totient is φ = 722212650.

The previous prime is 722212637. The next prime is 722212703. The reversal of 722212651 is 156212227.

It is a weak prime.

It is an emirp because it is prime and its reverse (156212227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722212651 - 2⁷ = 722212523 is a prime.

It is a super-2 number, since 2×722212651² = 1043182226528895602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (722212151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361106325 + 361106326.

It is an arithmetic number, because the mean of its divisors is an integer number (361106326).

Almost surely, 2^722212651 is an apocalyptic number.

722212651 is a deficient number, since it is larger than the sum of its proper divisors (1).

722212651 is an equidigital number, since it uses as much as digits as its factorization.

722212651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 722212651 is about 26874.0144191373. The cubic root of 722212651 is about 897.1981386183.

Adding to 722212651 its reverse (156212227), we get a palindrome (878424878).

The spelling of 722212651 in words is "seven hundred twenty-two million, two hundred twelve thousand, six hundred fifty-one".