195121113202 has 8 divisors (see below), whose sum is σ = 292683620700. Its totient is φ = 97559906304.

The previous prime is 195121113191. The next prime is 195121113247. The reversal of 195121113202 is 202311121591.

It can be written as a sum of positive squares in 2 ways, for example, as 194561270281 + 559842921 = 441091^2 + 23661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 261874 + ... + 677362.

Almost surely, 2^195121113202 is an apocalyptic number.

195121113202 is a deficient number, since it is larger than the sum of its proper divisors (97562507498).

195121113202 is a wasteful number, since it uses less digits than its factorization.

195121113202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650300.

The product of its (nonzero) digits is 1080, while the sum is 28.

Adding to 195121113202 its reverse (202311121591), we get a palindrome (397432234793).

The spelling of 195121113202 in words is "one hundred ninety-five billion, one hundred twenty-one million, one hundred thirteen thousand, two hundred two".