121422131 has 4 divisors (see below), whose sum is σ = 122959200. Its totient is φ = 119885064.

The previous prime is 121422127. The next prime is 121422151. The reversal of 121422131 is 131224121.

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 121422131 - 2² = 121422127 is a prime.

It is a super-2 number, since 2×121422131² = 29486667793162322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121422121) 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, 768416 + ... + 768573.

It is an arithmetic number, because the mean of its divisors is an integer number (30739800).

Almost surely, 2^121422131 is an apocalyptic number.

121422131 is a deficient number, since it is larger than the sum of its proper divisors (1537069).

121422131 is an equidigital number, since it uses as much as digits as its factorization.

121422131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537068.

The product of its digits is 96, while the sum is 17.

The square root of 121422131 is about 11019.1710668271. The cubic root of 121422131 is about 495.1832549386.

Adding to 121422131 its reverse (131224121), we get a palindrome (252646252).

The spelling of 121422131 in words is "one hundred twenty-one million, four hundred twenty-two thousand, one hundred thirty-one".