720001122089 has 2 divisors, whose sum is σ = 720001122090. Its totient is φ = 720001122088.

The previous prime is 720001122067. The next prime is 720001122101. The reversal of 720001122089 is 980221100027.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452720394025 + 267280728064 = 672845^2 + 516992^2 .

It is a cyclic number.

It is not a de Polignac number, because 720001122089 - 2¹² = 720001117993 is a prime.

It is not a weakly prime, because it can be changed into another prime (720001127089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360000561044 + 360000561045.

It is an arithmetic number, because the mean of its divisors is an integer number (360000561045).

Almost surely, 2^720001122089 is an apocalyptic number.

It is an amenable number.

720001122089 is a deficient number, since it is larger than the sum of its proper divisors (1).

720001122089 is an equidigital number, since it uses as much as digits as its factorization.

720001122089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 720001122089 in words is "seven hundred twenty billion, one million, one hundred twenty-two thousand, eighty-nine".