121222131 has 8 divisors (see below), whose sum is σ = 162355200. Its totient is φ = 80451912.

The previous prime is 121222099. The next prime is 121222133. The reversal of 121222131 is 131222121.

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

It is not a de Polignac number, because 121222131 - 2⁵ = 121222099 is a prime.

It is a super-2 number, since 2×121222131² = 29389610088362322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121222131.

It is not an unprimeable number, because it can be changed into a prime (121222133) 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, 89931 + ... + 91268.

It is an arithmetic number, because the mean of its divisors is an integer number (20294400).

Almost surely, 2^121222131 is an apocalyptic number.

121222131 is a deficient number, since it is larger than the sum of its proper divisors (41133069).

121222131 is a wasteful number, since it uses less digits than its factorization.

121222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181425.

The product of its digits is 48, while the sum is 15.

The square root of 121222131 is about 11010.0922339461. The cubic root of 121222131 is about 494.9112257901.

Adding to 121222131 its reverse (131222121), we get a palindrome (252444252).

The spelling of 121222131 in words is "one hundred twenty-one million, two hundred twenty-two thousand, one hundred thirty-one".