722130652221 has 16 divisors (see below), whose sum is σ = 1055814208320. Its totient is φ = 435387294720.

The previous prime is 722130652219. The next prime is 722130652241. The reversal of 722130652221 is 122256031227.

It is not a de Polignac number, because 722130652221 - 2¹ = 722130652219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722130652241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56684686 + ... + 56697423.

It is an arithmetic number, because the mean of its divisors is an integer number (65988388020).

Almost surely, 2^722130652221 is an apocalyptic number.

It is an amenable number.

722130652221 is a deficient number, since it is larger than the sum of its proper divisors (333683556099).

722130652221 is a wasteful number, since it uses less digits than its factorization.

722130652221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113382316.

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 722130652221 its reverse (122256031227), we get a palindrome (844386683448).

The spelling of 722130652221 in words is "seven hundred twenty-two billion, one hundred thirty million, six hundred fifty-two thousand, two hundred twenty-one".