121508838 has 48 divisors (see below), whose sum is σ = 302328000. Its totient is φ = 34881840.

The previous prime is 121508831. The next prime is 121508867. The reversal of 121508838 is 838805121.

It is a super-2 number, since 2×121508838² = 29528795424220488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121508831) 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, 12388 + ... + 19911.

It is an arithmetic number, because the mean of its divisors is an integer number (6298500).

Almost surely, 2^121508838 is an apocalyptic number.

121508838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

121508838 is an abundant number, since it is smaller than the sum of its proper divisors (180819162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121508838 is a wasteful number, since it uses less digits than its factorization.

121508838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32337 (or 32334 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 121508838 is about 11023.1047350554. The cubic root of 121508838 is about 495.3010962747.

The spelling of 121508838 in words is "one hundred twenty-one million, five hundred eight thousand, eight hundred thirty-eight".