131222101 has 8 divisors (see below), whose sum is σ = 135926784. Its totient is φ = 126546960.

The previous prime is 131222093. The next prime is 131222123. The reversal of 131222101 is 101222131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131222101 - 2³ = 131222093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1860 + ... + 16306.

It is an arithmetic number, because the mean of its divisors is an integer number (16990848).

Almost surely, 2^131222101 is an apocalyptic number.

It is an amenable number.

131222101 is a deficient number, since it is larger than the sum of its proper divisors (4704683).

131222101 is a wasteful number, since it uses less digits than its factorization.

131222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14771.

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

The square root of 131222101 is about 11455.2215604937. The cubic root of 131222101 is about 508.1621676755.

Adding to 131222101 its reverse (101222131), we get a palindrome (232444232).

The spelling of 131222101 in words is "one hundred thirty-one million, two hundred twenty-two thousand, one hundred one".