121120231 has 8 divisors (see below), whose sum is σ = 133038720. Its totient is φ = 109756152.

The previous prime is 121120229. The next prime is 121120253. The reversal of 121120231 is 132021121.

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

It is a cyclic number.

It is not a de Polignac number, because 121120231 - 2¹ = 121120229 is a prime.

It is a super-2 number, since 2×121120231² = 29340220714986722, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120261) 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, 138145 + ... + 139018.

It is an arithmetic number, because the mean of its divisors is an integer number (16629840).

Almost surely, 2^121120231 is an apocalyptic number.

121120231 is a deficient number, since it is larger than the sum of its proper divisors (11918489).

121120231 is a wasteful number, since it uses less digits than its factorization.

121120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277205.

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

The square root of 121120231 is about 11005.4636885503. The cubic root of 121120231 is about 494.7725118685.

Adding to 121120231 its reverse (132021121), we get a palindrome (253141352).

The spelling of 121120231 in words is "one hundred twenty-one million, one hundred twenty thousand, two hundred thirty-one".