20222917 has 16 divisors (see below), whose sum is σ = 24006528. Its totient is φ = 16793280.

The previous prime is 20222887. The next prime is 20222933. The reversal of 20222917 is 71922202.

It is a cyclic number.

It is not a de Polignac number, because 20222917 - 2⁷ = 20222789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20222891 and 20222900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222987) 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, 14043 + ... + 15415.

It is an arithmetic number, because the mean of its divisors is an integer number (1500408).

Almost surely, 2^20222917 is an apocalyptic number.

It is an amenable number.

20222917 is a deficient number, since it is larger than the sum of its proper divisors (3783611).

20222917 is a wasteful number, since it uses less digits than its factorization.

20222917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20222917 is about 4496.9897709468. The cubic root of 20222917 is about 272.4465209420.

The spelling of 20222917 in words is "twenty million, two hundred twenty-two thousand, nine hundred seventeen".