122201131 has 4 divisors (see below), whose sum is σ = 131601232. Its totient is φ = 112801032.

The previous prime is 122201111. The next prime is 122201143. The reversal of 122201131 is 131102221.

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

It is a cyclic number.

It is not a de Polignac number, because 122201131 - 2⁷ = 122201003 is a prime.

It is a super-2 number, since 2×122201131² = 29866232835358322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 9400087 = 122201131 / (1 + 2 + 2 + 2 + 0 + 1 + 1 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122201111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4700031 + ... + 4700056.

It is an arithmetic number, because the mean of its divisors is an integer number (32900308).

Almost surely, 2^122201131 is an apocalyptic number.

122201131 is a deficient number, since it is larger than the sum of its proper divisors (9400101).

122201131 is an equidigital number, since it uses as much as digits as its factorization.

122201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9400100.

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

The square root of 122201131 is about 11054.4620402804. The cubic root of 122201131 is about 496.2399698920.

Adding to 122201131 its reverse (131102221), we get a palindrome (253303352).

The spelling of 122201131 in words is "one hundred twenty-two million, two hundred one thousand, one hundred thirty-one".