2202051861 has 12 divisors (see below), whose sum is σ = 3283346560. Its totient is φ = 1420678440.

The previous prime is 2202051853. The next prime is 2202051869. The reversal of 2202051861 is 1681502022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2202051853) and next prime (2202051869).

It is not a de Polignac number, because 2202051861 - 2³ = 2202051853 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 (2202051869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3946051 + ... + 3946608.

Almost surely, 2^2202051861 is an apocalyptic number.

It is an amenable number.

2202051861 is a deficient number, since it is larger than the sum of its proper divisors (1081294699).

2202051861 is a wasteful number, since it uses less digits than its factorization.

2202051861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892696 (or 7892693 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2202051861 is about 46926.0254123445. The cubic root of 2202051861 is about 1300.9956595257.

Adding to 2202051861 its reverse (1681502022), we get a palindrome (3883553883).

The spelling of 2202051861 in words is "two billion, two hundred two million, fifty-one thousand, eight hundred sixty-one".