2055202221 has 4 divisors (see below), whose sum is σ = 2740269632. Its totient is φ = 1370134812.

The previous prime is 2055202213. The next prime is 2055202223. The reversal of 2055202221 is 1222025502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2055202221 - 2³ = 2055202213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055202223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342533701 + ... + 342533706.

It is an arithmetic number, because the mean of its divisors is an integer number (685067408).

Almost surely, 2^2055202221 is an apocalyptic number.

It is an amenable number.

2055202221 is a deficient number, since it is larger than the sum of its proper divisors (685067411).

2055202221 is an equidigital number, since it uses as much as digits as its factorization.

2055202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685067410.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2055202221 is about 45334.3382106765. The cubic root of 2055202221 is about 1271.4077474800.

Adding to 2055202221 its reverse (1222025502), we get a palindrome (3277227723).

The spelling of 2055202221 in words is "two billion, fifty-five million, two hundred two thousand, two hundred twenty-one".