22778917101 has 12 divisors (see below), whose sum is σ = 32923350460. Its totient is φ = 15176496960.

The previous prime is 22778917099. The next prime is 22778917103. The reversal of 22778917101 is 10171987722.

It is an interprime number because it is at equal distance from previous prime (22778917099) and next prime (22778917103).

It can be written as a sum of positive squares in 2 ways, for example, as 20404694025 + 2374223076 = 142845^2 + 48726^2 .

It is not a de Polignac number, because 22778917101 - 2¹ = 22778917099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22778917103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 772030 + ... + 800991.

Almost surely, 2^22778917101 is an apocalyptic number.

It is an amenable number.

22778917101 is a deficient number, since it is larger than the sum of its proper divisors (10144433359).

22778917101 is a wasteful number, since it uses less digits than its factorization.

22778917101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574636 (or 1574633 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 45.

The spelling of 22778917101 in words is "twenty-two billion, seven hundred seventy-eight million, nine hundred seventeen thousand, one hundred one".