20222277 has 4 divisors (see below), whose sum is σ = 26963040. Its totient is φ = 13481516.

The previous prime is 20222249. The next prime is 20222287. The reversal of 20222277 is 77222202.

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 a cyclic number.

It is not a de Polignac number, because 20222277 - 2⁸ = 20222021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222207) 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, 3370377 + ... + 3370382.

It is an arithmetic number, because the mean of its divisors is an integer number (6740760).

Almost surely, 2^20222277 is an apocalyptic number.

It is an amenable number.

20222277 is a deficient number, since it is larger than the sum of its proper divisors (6740763).

20222277 is an equidigital number, since it uses as much as digits as its factorization.

20222277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740762.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20222277 is about 4496.9186116718. The cubic root of 20222277 is about 272.4436468493.

Adding to 20222277 its reverse (77222202), we get a palindrome (97444479).

The spelling of 20222277 in words is "twenty million, two hundred twenty-two thousand, two hundred seventy-seven".