121112231 has 4 divisors (see below), whose sum is σ = 122311464. Its totient is φ = 119913000.

The previous prime is 121112203. The next prime is 121112263. The reversal of 121112231 is 132211121.

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 121112231 - 2¹⁴ = 121095847 is a prime.

It is a super-2 number, since 2×121112231² = 29336344995594722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599465 + ... + 599666.

It is an arithmetic number, because the mean of its divisors is an integer number (30577866).

Almost surely, 2^121112231 is an apocalyptic number.

121112231 is a deficient number, since it is larger than the sum of its proper divisors (1199233).

121112231 is a wasteful number, since it uses less digits than its factorization.

121112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199232.

The product of its digits is 24, while the sum is 14.

The square root of 121112231 is about 11005.1002267131. The cubic root of 121112231 is about 494.7616183753.

Adding to 121112231 its reverse (132211121), we get a palindrome (253323352).

The spelling of 121112231 in words is "one hundred twenty-one million, one hundred twelve thousand, two hundred thirty-one".