121233986 has 4 divisors (see below), whose sum is σ = 181850982. Its totient is φ = 60616992.

The previous prime is 121233923. The next prime is 121234013. The reversal of 121233986 is 689332121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 105781225 + 15452761 = 10285^2 + 3931^2 .

It is a super-2 number, since 2×121233986² = 29395358722896392, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30308495 + ... + 30308498.

Almost surely, 2^121233986 is an apocalyptic number.

121233986 is a deficient number, since it is larger than the sum of its proper divisors (60616996).

121233986 is an equidigital number, since it uses as much as digits as its factorization.

121233986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60616995.

The product of its digits is 15552, while the sum is 35.

The square root of 121233986 is about 11010.6305904794. The cubic root of 121233986 is about 494.9273586564.

The spelling of 121233986 in words is "one hundred twenty-one million, two hundred thirty-three thousand, nine hundred eighty-six".