121236917 has 16 divisors (see below), whose sum is σ = 126982080. Its totient is φ = 115669632.

The previous prime is 121236883. The next prime is 121236931. The reversal of 121236917 is 719632121.

It is a cyclic number.

It is not a de Polignac number, because 121236917 - 2¹² = 121232821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421236917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428258 + ... + 428540.

It is an arithmetic number, because the mean of its divisors is an integer number (7936380).

Almost surely, 2^121236917 is an apocalyptic number.

It is an amenable number.

121236917 is a deficient number, since it is larger than the sum of its proper divisors (5745163).

121236917 is a wasteful number, since it uses less digits than its factorization.

121236917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 4536, while the sum is 32.

The square root of 121236917 is about 11010.7636883188. The cubic root of 121236917 is about 494.9313471431.

The spelling of 121236917 in words is "one hundred twenty-one million, two hundred thirty-six thousand, nine hundred seventeen".