121505222 has 32 divisors (see below), whose sum is σ = 199874304. Its totient is φ = 55168000.

The previous prime is 121505191. The next prime is 121505227. The reversal of 121505222 is 222505121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121505194 and 121505203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121505227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140363 + ... + 141225.

It is an arithmetic number, because the mean of its divisors is an integer number (6246072).

Almost surely, 2^121505222 is an apocalyptic number.

121505222 is a deficient number, since it is larger than the sum of its proper divisors (78369082).

121505222 is a wasteful number, since it uses less digits than its factorization.

121505222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 121505222 is about 11022.9407147095. The cubic root of 121505222 is about 495.2961829791.

The spelling of 121505222 in words is "one hundred twenty-one million, five hundred five thousand, two hundred twenty-two".