121641369 has 8 divisors (see below), whose sum is σ = 162278592. Its totient is φ = 81049200.

The previous prime is 121641361. The next prime is 121641407. The reversal of 121641369 is 963146121.

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

It is not a de Polignac number, because 121641369 - 2³ = 121641361 is a prime.

It is a super-2 number, since 2×121641369² = 29593245304388322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121641361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4357 + ... + 16194.

It is an arithmetic number, because the mean of its divisors is an integer number (20284824).

Almost surely, 2^121641369 is an apocalyptic number.

It is an amenable number.

121641369 is a deficient number, since it is larger than the sum of its proper divisors (40637223).

121641369 is a wasteful number, since it uses less digits than its factorization.

121641369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22527.

The product of its digits is 7776, while the sum is 33.

The square root of 121641369 is about 11029.1146063499. The cubic root of 121641369 is about 495.4811075929.

The spelling of 121641369 in words is "one hundred twenty-one million, six hundred forty-one thousand, three hundred sixty-nine".