201121022195 has 16 divisors (see below), whose sum is σ = 247770759168. Its totient is φ = 156648977760.

The previous prime is 201121022177. The next prime is 201121022243. The reversal of 201121022195 is 591220121102.

It is not a de Polignac number, because 201121022195 - 2¹² = 201121018099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2195519 + ... + 2285288.

It is an arithmetic number, because the mean of its divisors is an integer number (15485672448).

Almost surely, 2^201121022195 is an apocalyptic number.

201121022195 is a deficient number, since it is larger than the sum of its proper divisors (46649736973).

201121022195 is a wasteful number, since it uses less digits than its factorization.

201121022195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481050.

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 201121022195 its reverse (591220121102), we get a palindrome (792341143297).

The spelling of 201121022195 in words is "two hundred one billion, one hundred twenty-one million, twenty-two thousand, one hundred ninety-five".