121444231 has 4 divisors (see below), whose sum is σ = 121811464. Its totient is φ = 121077000.

The previous prime is 121444207. The next prime is 121444241. The reversal of 121444231 is 132444121.

It is a happy number.

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 121444231 - 2¹¹ = 121442183 is a prime.

It is a super-2 number, since 2×121444231² = 29497402486362722, 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 (121444201) 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, 183120 + ... + 183781.

It is an arithmetic number, because the mean of its divisors is an integer number (30452866).

Almost surely, 2^121444231 is an apocalyptic number.

121444231 is a deficient number, since it is larger than the sum of its proper divisors (367233).

121444231 is an equidigital number, since it uses as much as digits as its factorization.

121444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367232.

The product of its digits is 768, while the sum is 22.

The square root of 121444231 is about 11020.1738189559. The cubic root of 121444231 is about 495.2132958270.

Adding to 121444231 its reverse (132444121), we get a palindrome (253888352).

The spelling of 121444231 in words is "one hundred twenty-one million, four hundred forty-four thousand, two hundred thirty-one".