2021322195 has 20 divisors (see below), whose sum is σ = 3623407920. Its totient is φ = 1078038288.

The previous prime is 2021322187. The next prime is 2021322197. The reversal of 2021322195 is 5912231202.

It is a happy number.

It is not a de Polignac number, because 2021322195 - 2³ = 2021322187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2021322197) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2495055 + ... + 2495864.

It is an arithmetic number, because the mean of its divisors is an integer number (181170396).

Almost surely, 2^2021322195 is an apocalyptic number.

2021322195 is a deficient number, since it is larger than the sum of its proper divisors (1602085725).

2021322195 is an equidigital number, since it uses as much as digits as its factorization.

2021322195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990936 (or 4990927 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2021322195 is about 44959.1169286053. The cubic root of 2021322195 is about 1264.3826125921.

Adding to 2021322195 its reverse (5912231202), we get a palindrome (7933553397).

The spelling of 2021322195 in words is "two billion, twenty-one million, three hundred twenty-two thousand, one hundred ninety-five".