121163858 has 4 divisors (see below), whose sum is σ = 181745790. Its totient is φ = 60581928.

The previous prime is 121163851. The next prime is 121163869. The reversal of 121163858 is 858361121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858361121 = 3617 ⋅237313.

It can be written as a sum of positive squares in only one way, i.e., 75290329 + 45873529 = 8677^2 + 6773^2 .

It is not an unprimeable number, because it can be changed into a prime (121163851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30290963 + ... + 30290966.

Almost surely, 2^121163858 is an apocalyptic number.

121163858 is a deficient number, since it is larger than the sum of its proper divisors (60581932).

121163858 is an equidigital number, since it uses as much as digits as its factorization.

121163858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60581931.

The product of its digits is 11520, while the sum is 35.

The square root of 121163858 is about 11007.4455710669. The cubic root of 121163858 is about 494.8319097331.

The spelling of 121163858 in words is "one hundred twenty-one million, one hundred sixty-three thousand, eight hundred fifty-eight".