121031223 has 12 divisors (see below), whose sum is σ = 166752504. Its totient is φ = 78082800.

The previous prime is 121031219. The next prime is 121031233. The reversal of 121031223 is 322130121.

It is not a de Polignac number, because 121031223 - 2² = 121031219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18108 + ... + 23873.

It is an arithmetic number, because the mean of its divisors is an integer number (13896042).

Almost surely, 2^121031223 is an apocalyptic number.

121031223 is a deficient number, since it is larger than the sum of its proper divisors (45721281).

121031223 is an equidigital number, since it uses as much as digits as its factorization.

121031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42046 (or 42015 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121031223 is about 11001.4191357297. The cubic root of 121031223 is about 494.6512838309.

Adding to 121031223 its reverse (322130121), we get a palindrome (443161344).

The spelling of 121031223 in words is "one hundred twenty-one million, thirty-one thousand, two hundred twenty-three".