2002201220 has 12 divisors (see below), whose sum is σ = 4204622604. Its totient is φ = 800880480.

The previous prime is 2002201219. The next prime is 2002201237. The reversal of 2002201220 is 221022002.

It can be written as a sum of positive squares in 2 ways, for example, as 214095424 + 1788105796 = 14632^2 + 42286^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50055011 + ... + 50055050.

It is an arithmetic number, because the mean of its divisors is an integer number (350385217).

Almost surely, 2^2002201220 is an apocalyptic number.

2002201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2002201220 is an abundant number, since it is smaller than the sum of its proper divisors (2202421384).

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

2002201220 is a wasteful number, since it uses less digits than its factorization.

2002201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100110070 (or 100110068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2002201220 is about 44745.9631698771. The cubic root of 2002201220 is about 1260.3831076568.

Adding to 2002201220 its reverse (221022002), we get a palindrome (2223223222).

The spelling of 2002201220 in words is "two billion, two million, two hundred one thousand, two hundred twenty".