720222122101001 has 16 divisors (see below), whose sum is σ = 786462640383504. Its totient is φ = 655534959842304.

The previous prime is 720222122100991. The next prime is 720222122101129. The reversal of 720222122101001 is 100101221222027.

720222122101001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 44098564455625 + 676123557645376 = 6640675^2 + 26002376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720222122101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720222122001001) 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, 99709796 + ... + 106688741.

It is an arithmetic number, because the mean of its divisors is an integer number (49153915023969).

Almost surely, 2^{720222122101001} is an apocalyptic number.

It is an amenable number.

720222122101001 is a deficient number, since it is larger than the sum of its proper divisors (66240518282503).

720222122101001 is a wasteful number, since it uses less digits than its factorization.

720222122101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206402300.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 720222122101001 its reverse (100101221222027), we get a palindrome (820323343323028).

The spelling of 720222122101001 in words is "seven hundred twenty trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred one thousand, one".