722115222001 has 4 divisors (see below), whose sum is σ = 722193884404. Its totient is φ = 722036559600.

The previous prime is 722115221957. The next prime is 722115222007. The reversal of 722115222001 is 100222511227.

It is a happy number.

722115222001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100222511227 = 29 ⋅3455948663.

It can be written as a sum of positive squares in 2 ways, for example, as 338398158400 + 383717063601 = 581720^2 + 619449^2 .

It is a cyclic number.

It is not a de Polignac number, because 722115222001 - 2²⁷ = 721981004273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722115222007) 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, 39317430 + ... + 39335791.

It is an arithmetic number, because the mean of its divisors is an integer number (180548471101).

Almost surely, 2^722115222001 is an apocalyptic number.

It is an amenable number.

722115222001 is a deficient number, since it is larger than the sum of its proper divisors (78662403).

722115222001 is an equidigital number, since it uses as much as digits as its factorization.

722115222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78662402.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 722115222001 its reverse (100222511227), we get a palindrome (822337733228).

The spelling of 722115222001 in words is "seven hundred twenty-two billion, one hundred fifteen million, two hundred twenty-two thousand, one".