121153423 has 2 divisors, whose sum is σ = 121153424. Its totient is φ = 121153422.

The previous prime is 121153421. The next prime is 121153427. The reversal of 121153423 is 324351121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121153423 - 2¹ = 121153421 is a prime.

Together with 121153421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121153394 and 121153403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121153421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60576711 + 60576712.

It is an arithmetic number, because the mean of its divisors is an integer number (60576712).

Almost surely, 2^121153423 is an apocalyptic number.

121153423 is a deficient number, since it is larger than the sum of its proper divisors (1).

121153423 is an equidigital number, since it uses as much as digits as its factorization.

121153423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 121153423 is about 11006.9715635137. The cubic root of 121153423 is about 494.8177038489.

The spelling of 121153423 in words is "one hundred twenty-one million, one hundred fifty-three thousand, four hundred twenty-three".