121155223 has 8 divisors (see below), whose sum is σ = 142929920. Its totient is φ = 100497240.

The previous prime is 121155193. The next prime is 121155227. The reversal of 121155223 is 322551121.

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 121155223 - 2⁹ = 121154711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121155194 and 121155203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121155227) 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, 278943 + ... + 279376.

It is an arithmetic number, because the mean of its divisors is an integer number (17866240).

Almost surely, 2^121155223 is an apocalyptic number.

121155223 is a deficient number, since it is larger than the sum of its proper divisors (21774697).

121155223 is an equidigital number, since it uses as much as digits as its factorization.

121155223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558357.

The product of its digits is 600, while the sum is 22.

The square root of 121155223 is about 11007.0533295701. The cubic root of 121155223 is about 494.8201543711.

The spelling of 121155223 in words is "one hundred twenty-one million, one hundred fifty-five thousand, two hundred twenty-three".