12123091 has 8 divisors (see below), whose sum is σ = 12883104. Its totient is φ = 11368320.

The previous prime is 12123053. The next prime is 12123101. The reversal of 12123091 is 19032121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12123091 - 2¹⁹ = 11598803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4141 + ... + 6433.

It is an arithmetic number, because the mean of its divisors is an integer number (1610388).

Almost surely, 2^12123091 is an apocalyptic number.

12123091 is a deficient number, since it is larger than the sum of its proper divisors (760013).

12123091 is a wasteful number, since it uses less digits than its factorization.

12123091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 12123091 is about 3481.8229420808. The cubic root of 12123091 is about 229.7229872298.

The spelling of 12123091 in words is "twelve million, one hundred twenty-three thousand, ninety-one".