121161279 has 8 divisors (see below), whose sum is σ = 164286720. Its totient is φ = 79405016.

The previous prime is 121161277. The next prime is 121161281. The reversal of 121161279 is 972161121.

It is an interprime number because it is at equal distance from previous prime (121161277) and next prime (121161281).

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

It is a cyclic number.

It is not a de Polignac number, because 121161279 - 2¹ = 121161277 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121161277) 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, 342087 + ... + 342440.

It is an arithmetic number, because the mean of its divisors is an integer number (20535840).

Almost surely, 2^121161279 is an apocalyptic number.

121161279 is a deficient number, since it is larger than the sum of its proper divisors (43125441).

121161279 is an equidigital number, since it uses as much as digits as its factorization.

121161279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684589.

The product of its digits is 1512, while the sum is 30.

The square root of 121161279 is about 11007.3284224647. The cubic root of 121161279 is about 494.8283988386.

The spelling of 121161279 in words is "one hundred twenty-one million, one hundred sixty-one thousand, two hundred seventy-nine".