121691352 has 32 divisors (see below), whose sum is σ = 320241600. Its totient is φ = 38428704.

The previous prime is 121691351. The next prime is 121691359. The reversal of 121691352 is 253196121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121691351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132978 + ... + 133889.

It is an arithmetic number, because the mean of its divisors is an integer number (10007550).

Almost surely, 2^121691352 is an apocalyptic number.

121691352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121691352 is an abundant number, since it is smaller than the sum of its proper divisors (198550248).

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

121691352 is a wasteful number, since it uses less digits than its factorization.

121691352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266895 (or 266891 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 121691352 is about 11031.3803306749. The cubic root of 121691352 is about 495.5489634577.

The spelling of 121691352 in words is "one hundred twenty-one million, six hundred ninety-one thousand, three hundred fifty-two".