22077317721 has 8 divisors (see below), whose sum is σ = 29617015840. Its totient is φ = 14627915712.

The previous prime is 22077317719. The next prime is 22077317723. The reversal of 22077317721 is 12771377022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22077317719) and next prime (22077317723).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22077317721 - 2¹ = 22077317719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22077317721.

It is not an unprimeable number, because it can be changed into a prime (22077317723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22573456 + ... + 22574433.

It is an arithmetic number, because the mean of its divisors is an integer number (3702126980).

Almost surely, 2^22077317721 is an apocalyptic number.

It is an amenable number.

22077317721 is a deficient number, since it is larger than the sum of its proper divisors (7539698119).

22077317721 is a wasteful number, since it uses less digits than its factorization.

22077317721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45148055.

The product of its (nonzero) digits is 57624, while the sum is 39.

The spelling of 22077317721 in words is "twenty-two billion, seventy-seven million, three hundred seventeen thousand, seven hundred twenty-one".