22077217 has 4 divisors (see below), whose sum is σ = 23037120. Its totient is φ = 21117316.

The previous prime is 22077193. The next prime is 22077241. The reversal of 22077217 is 71277022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (22077193) and next prime (22077241).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22077217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22077247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479917 + ... + 479962.

It is an arithmetic number, because the mean of its divisors is an integer number (5759280).

Almost surely, 2^22077217 is an apocalyptic number.

It is an amenable number.

22077217 is a deficient number, since it is larger than the sum of its proper divisors (959903).

22077217 is an equidigital number, since it uses as much as digits as its factorization.

22077217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959902.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 22077217 is about 4698.6399095909. The cubic root of 22077217 is about 280.5313761355.

The spelling of 22077217 in words is "twenty-two million, seventy-seven thousand, two hundred seventeen".