121337909 has 8 divisors (see below), whose sum is σ = 151278528. Its totient is φ = 94548960.

The previous prime is 121337897. The next prime is 121337929. The reversal of 121337909 is 909733121.

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

It is a de Polignac number, because none of the positive numbers 2^k-121337909 is a prime.

It is a super-3 number, since 3×121337909³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121337929) 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, 787832 + ... + 787985.

It is an arithmetic number, because the mean of its divisors is an integer number (18909816).

Almost surely, 2^121337909 is an apocalyptic number.

It is an amenable number.

121337909 is a deficient number, since it is larger than the sum of its proper divisors (29940619).

121337909 is a wasteful number, since it uses less digits than its factorization.

121337909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575835.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 121337909 is about 11015.3487915726. The cubic root of 121337909 is about 495.0687371810.

The spelling of 121337909 in words is "one hundred twenty-one million, three hundred thirty-seven thousand, nine hundred nine".