2522203220 has 24 divisors (see below), whose sum is σ = 5396565384. Its totient is φ = 989845376.

The previous prime is 2522203193. The next prime is 2522203231. The reversal of 2522203220 is 223022252.

It can be written as a sum of positive squares in 4 ways, for example, as 263672644 + 2258530576 = 16238^2 + 47524^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2522203192 and 2522203201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1188659 + ... + 1190778.

It is an arithmetic number, because the mean of its divisors is an integer number (224856891).

Almost surely, 2^2522203220 is an apocalyptic number.

2522203220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2522203220 is an abundant number, since it is smaller than the sum of its proper divisors (2874362164).

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

2522203220 is a wasteful number, since it uses less digits than its factorization.

2522203220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379499 (or 2379497 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 2522203220 is about 50221.5413941070. The cubic root of 2522203220 is about 1361.2148926386.

Adding to 2522203220 its reverse (223022252), we get a palindrome (2745225472).

The spelling of 2522203220 in words is "two billion, five hundred twenty-two million, two hundred three thousand, two hundred twenty".