201202202091 has 32 divisors (see below), whose sum is σ = 293444626176. Its totient is φ = 121613328000.

The previous prime is 201202202063. The next prime is 201202202107. The reversal of 201202202091 is 190202202102.

It is a happy number.

It is not a de Polignac number, because 201202202091 - 2⁵ = 201202202059 is a prime.

It is a super-2 number, since 2×201202202091² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201202202041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19993201 + ... + 20003261.

It is an arithmetic number, because the mean of its divisors is an integer number (9170144568).

Almost surely, 2^201202202091 is an apocalyptic number.

201202202091 is a deficient number, since it is larger than the sum of its proper divisors (92242424085).

201202202091 is a wasteful number, since it uses less digits than its factorization.

201202202091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11643.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 201202202091 its reverse (190202202102), we get a palindrome (391404404193).

The spelling of 201202202091 in words is "two hundred one billion, two hundred two million, two hundred two thousand, ninety-one".