22121660242 has 8 divisors (see below), whose sum is σ = 36199080432. Its totient is φ = 10055300100.

The previous prime is 22121660213. The next prime is 22121660257. The reversal of 22121660242 is 24206612122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22121660242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502764984 + ... + 502765027.

It is an arithmetic number, because the mean of its divisors is an integer number (4524885054).

Almost surely, 2^22121660242 is an apocalyptic number.

22121660242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22121660242 is a deficient number, since it is larger than the sum of its proper divisors (14077420190).

22121660242 is a wasteful number, since it uses less digits than its factorization.

22121660242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005530024.

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 22121660242 in words is "twenty-two billion, one hundred twenty-one million, six hundred sixty thousand, two hundred forty-two".