121153453 has 2 divisors, whose sum is σ = 121153454. Its totient is φ = 121153452.

The previous prime is 121153427. The next prime is 121153469. The reversal of 121153453 is 354351121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88868329 + 32285124 = 9427^2 + 5682^2 .

It is a cyclic number.

It is not a de Polignac number, because 121153453 - 2⁵ = 121153421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121153423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60576726 + 60576727.

It is an arithmetic number, because the mean of its divisors is an integer number (60576727).

Almost surely, 2^121153453 is an apocalyptic number.

It is an amenable number.

121153453 is a deficient number, since it is larger than the sum of its proper divisors (1).

121153453 is an equidigital number, since it uses as much as digits as its factorization.

121153453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 25.

The square root of 121153453 is about 11006.9729262863. The cubic root of 121153453 is about 494.8177446911.

The spelling of 121153453 in words is "one hundred twenty-one million, one hundred fifty-three thousand, four hundred fifty-three".