121455223 has 2 divisors, whose sum is σ = 121455224. Its totient is φ = 121455222.

The previous prime is 121455199. The next prime is 121455247. The reversal of 121455223 is 322554121.

It is a balanced prime because it is at equal distance from previous prime (121455199) and next prime (121455247).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121455223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121455623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60727611 + 60727612.

It is an arithmetic number, because the mean of its divisors is an integer number (60727612).

Almost surely, 2^121455223 is an apocalyptic number.

121455223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121455223 is an equidigital number, since it uses as much as digits as its factorization.

121455223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 25.

The square root of 121455223 is about 11020.6725293877. The cubic root of 121455223 is about 495.2282360738.

The spelling of 121455223 in words is "one hundred twenty-one million, four hundred fifty-five thousand, two hundred twenty-three".