20205222 has 16 divisors (see below), whose sum is σ = 40502592. Its totient is φ = 6719720.

The previous prime is 20205193. The next prime is 20205223. The reversal of 20205222 is 22250202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20205223) 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, 804 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (2531412).

Almost surely, 2^20205222 is an apocalyptic number.

20205222 is an abundant number, since it is smaller than the sum of its proper divisors (20297370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20205222 is a wasteful number, since it uses less digits than its factorization.

20205222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7683.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 20205222 is about 4495.0219131835. The cubic root of 20205222 is about 272.3670344206.

Adding to 20205222 its reverse (22250202), we get a palindrome (42455424).

The spelling of 20205222 in words is "twenty million, two hundred five thousand, two hundred twenty-two".