121351123 has 2 divisors, whose sum is σ = 121351124. Its totient is φ = 121351122.

The previous prime is 121351121. The next prime is 121351127. The reversal of 121351123 is 321153121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121351123 - 2¹ = 121351121 is a prime.

It is a super-2 number, since 2×121351123² = 29452190106722258, which contains 22 as substring.

Together with 121351121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121351123.

It is not a weakly prime, because it can be changed into another prime (121351121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60675561 + 60675562.

It is an arithmetic number, because the mean of its divisors is an integer number (60675562).

Almost surely, 2^121351123 is an apocalyptic number.

121351123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121351123 is an equidigital number, since it uses as much as digits as its factorization.

121351123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 121351123 is about 11015.9485746803. The cubic root of 121351123 is about 495.0867079342.

The spelling of 121351123 in words is "one hundred twenty-one million, three hundred fifty-one thousand, one hundred twenty-three".