121724022 has 16 divisors (see below), whose sum is σ = 278226432. Its totient is φ = 34778280.

The previous prime is 121723997. The next prime is 121724041. The reversal of 121724022 is 220427121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 121724022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449054 + ... + 1449137.

It is an arithmetic number, because the mean of its divisors is an integer number (17389152).

Almost surely, 2^121724022 is an apocalyptic number.

121724022 is an abundant number, since it is smaller than the sum of its proper divisors (156502410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121724022 is a wasteful number, since it uses less digits than its factorization.

121724022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898203.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 121724022 is about 11032.8610070099. The cubic root of 121724022 is about 495.5933055187.

The spelling of 121724022 in words is "one hundred twenty-one million, seven hundred twenty-four thousand, twenty-two".