20022222 has 16 divisors (see below), whose sum is σ = 43684992. Its totient is φ = 6067320.

The previous prime is 20022203. The next prime is 20022229. The reversal of 20022222 is 22222002.

20022222 is a modest number, since divided by 2222 gives 2002 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20022198 and 20022207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022229) 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, 151618 + ... + 151749.

It is an arithmetic number, because the mean of its divisors is an integer number (2730312).

Almost surely, 2^20022222 is an apocalyptic number.

20022222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20022222 is an abundant number, since it is smaller than the sum of its proper divisors (23662770).

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

20022222 is a wasteful number, since it uses less digits than its factorization.

20022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303383.

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

The square root of 20022222 is about 4474.6197603819. The cubic root of 20022222 is about 271.5422574289.

Adding to 20022222 its reverse (22222002), we get a palindrome (42244224).

It can be divided in two parts, 2002 and 2222, that multiplied together give a palindrome (4448444).

The spelling of 20022222 in words is "twenty million, twenty-two thousand, two hundred twenty-two".