200139022161 has 27 divisors (see below), whose sum is σ = 313065249627. Its totient is φ = 123151738320.

The previous prime is 200139022133. The next prime is 200139022183. The reversal of 200139022161 is 161220931002.

The square root of 200139022161 is 447369.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 29606364225 + 170532657936 = 172065^2 + 412956^2 .

It is not a de Polignac number, because 200139022161 - 2³⁵ = 165779283793 is a prime.

It is a super-2 number, since 2×200139022161² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (200139022361) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17441656 + ... + 17453126.

Almost surely, 2^200139022161 is an apocalyptic number.

200139022161 is the 447369-th square number.

200139022161 is the 223685-th centered octagonal number.

It is an amenable number.

200139022161 is a deficient number, since it is larger than the sum of its proper divisors (112926227466).

200139022161 is an frugal number, since it uses more digits than its factorization.

200139022161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22974 (or 11487 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

Multiplying 200139022161 by its product of nonzero digits (1296), we get a square (259380172720656 = 16105284²).

Adding to 200139022161 its reverse (161220931002), we get a palindrome (361359953163).

The spelling of 200139022161 in words is "two hundred billion, one hundred thirty-nine million, twenty-two thousand, one hundred sixty-one".