20202222 has 64 divisors (see below), whose sum is σ = 45209664. Its totient is φ = 5990400.

The previous prime is 20202197. The next prime is 20202223. The reversal of 20202222 is 22220202.

20202222 is a modest number, since divided by 2222 gives 2020 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20202198 and 20202207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199972 + ... + 200072.

It is an arithmetic number, because the mean of its divisors is an integer number (706401).

Almost surely, 2^20202222 is an apocalyptic number.

20202222 is an abundant number, since it is smaller than the sum of its proper divisors (25007442).

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

20202222 is a wasteful number, since it uses less digits than its factorization.

20202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20202222 is about 4494.6881983070. The cubic root of 20202222 is about 272.3535537216.

Adding to 20202222 its reverse (22220202), we get a palindrome (42422424).

It can be divided in two parts, 20202 and 222, that multiplied together give a palindrome (4484844).

The spelling of 20202222 in words is "twenty million, two hundred two thousand, two hundred twenty-two".