201131122 has 4 divisors (see below), whose sum is σ = 301696686. Its totient is φ = 100565560.

The previous prime is 201131083. The next prime is 201131123. The reversal of 201131122 is 221131102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 135699201 + 65431921 = 11649^2 + 8089^2 .

It is not an unprimeable number, because it can be changed into a prime (201131123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50282779 + ... + 50282782.

Almost surely, 2^201131122 is an apocalyptic number.

201131122 is a deficient number, since it is larger than the sum of its proper divisors (100565564).

201131122 is a wasteful number, since it uses less digits than its factorization.

201131122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100565563.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 201131122 is about 14182.0704412297. The cubic root of 201131122 is about 585.9039493588.

Adding to 201131122 its reverse (221131102), we get a palindrome (422262224).

It can be divided in two parts, 2011 and 31122, that added together give a palindrome (33133).

The spelling of 201131122 in words is "two hundred one million, one hundred thirty-one thousand, one hundred twenty-two".