202121202195 has 48 divisors (see below), whose sum is σ = 384173273952. Its totient is φ = 97490350080.

The previous prime is 202121202193. The next prime is 202121202197. The reversal of 202121202195 is 591202121202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (202121202193) and next prime (202121202197).

It is not a de Polignac number, because 202121202195 - 2¹ = 202121202193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202121202193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 962304 + ... + 1153373.

It is an arithmetic number, because the mean of its divisors is an integer number (8003609874).

Almost surely, 2^202121202195 is an apocalyptic number.

202121202195 is a deficient number, since it is larger than the sum of its proper divisors (182052071757).

202121202195 is a wasteful number, since it uses less digits than its factorization.

202121202195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115892 (or 2115889 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 202121202195 its reverse (591202121202), we get a palindrome (793323323397).

The spelling of 202121202195 in words is "two hundred two billion, one hundred twenty-one million, two hundred two thousand, one hundred ninety-five".