722601222251 has 4 divisors (see below), whose sum is σ = 722923958400. Its totient is φ = 722278486104.

The previous prime is 722601222227. The next prime is 722601222311. The reversal of 722601222251 is 152222106227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722601222251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722601282251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161364716 + ... + 161369193.

It is an arithmetic number, because the mean of its divisors is an integer number (180730989600).

Almost surely, 2^722601222251 is an apocalyptic number.

722601222251 is a deficient number, since it is larger than the sum of its proper divisors (322736149).

722601222251 is a wasteful number, since it uses less digits than its factorization.

722601222251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322736148.

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 722601222251 its reverse (152222106227), we get a palindrome (874823328478).

The spelling of 722601222251 in words is "seven hundred twenty-two billion, six hundred one million, two hundred twenty-two thousand, two hundred fifty-one".