121864022 has 16 divisors (see below), whose sum is σ = 212029440. Its totient is φ = 51447528.

The previous prime is 121863991. The next prime is 121864033. The reversal of 121864022 is 220468121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121863982 and 121864000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64022 + ... + 65897.

It is an arithmetic number, because the mean of its divisors is an integer number (13251840).

Almost surely, 2^121864022 is an apocalyptic number.

121864022 is a deficient number, since it is larger than the sum of its proper divisors (90165418).

121864022 is a wasteful number, since it uses less digits than its factorization.

121864022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129995.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 121864022 is about 11039.2038662215. The cubic root of 121864022 is about 495.7832337363.

The spelling of 121864022 in words is "one hundred twenty-one million, eight hundred sixty-four thousand, twenty-two".