121151223 has 12 divisors (see below), whose sum is σ = 175261320. Its totient is φ = 80645136.

The previous prime is 121151221. The next prime is 121151227. The reversal of 121151223 is 322151121.

It is not a de Polignac number, because 121151223 - 2¹ = 121151221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121151196 and 121151205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121151221) 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, 3708 + ... + 16001.

It is an arithmetic number, because the mean of its divisors is an integer number (14605110).

Almost surely, 2^121151223 is an apocalyptic number.

121151223 is a deficient number, since it is larger than the sum of its proper divisors (54110097).

121151223 is a wasteful number, since it uses less digits than its factorization.

121151223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20398 (or 20395 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 121151223 is about 11006.8716263978. The cubic root of 121151223 is about 494.8147087332.

The spelling of 121151223 in words is "one hundred twenty-one million, one hundred fifty-one thousand, two hundred twenty-three".