121089123 has 24 divisors (see below), whose sum is σ = 185842800. Its totient is φ = 75829824.

The previous prime is 121089121. The next prime is 121089127. The reversal of 121089123 is 321980121.

It is not a de Polignac number, because 121089123 - 2¹ = 121089121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121089121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3388 + ... + 15926.

It is an arithmetic number, because the mean of its divisors is an integer number (7743450).

Almost surely, 2^121089123 is an apocalyptic number.

121089123 is a deficient number, since it is larger than the sum of its proper divisors (64753677).

121089123 is a wasteful number, since it uses less digits than its factorization.

121089123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12611 (or 12608 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 121089123 is about 11004.0502997760. The cubic root of 121089123 is about 494.7301498259.

The spelling of 121089123 in words is "one hundred twenty-one million, eighty-nine thousand, one hundred twenty-three".