121075123 has 4 divisors (see below), whose sum is σ = 130388608. Its totient is φ = 111761640.

The previous prime is 121075111. The next prime is 121075153. The reversal of 121075123 is 321570121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121075123 - 2¹³ = 121066931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121075094 and 121075103.

It is not an unprimeable number, because it can be changed into a prime (121075153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4656723 + ... + 4656748.

It is an arithmetic number, because the mean of its divisors is an integer number (32597152).

Almost surely, 2^121075123 is an apocalyptic number.

121075123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121075123 is a deficient number, since it is larger than the sum of its proper divisors (9313485).

121075123 is an equidigital number, since it uses as much as digits as its factorization.

121075123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9313484.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 121075123 is about 11003.4141519803. The cubic root of 121075123 is about 494.7110826329.

The spelling of 121075123 in words is "one hundred twenty-one million, seventy-five thousand, one hundred twenty-three".