21120011121122 has 8 divisors (see below), whose sum is σ = 31770790369500. Its totient is φ = 10529747664624.

The previous prime is 21120011121107. The next prime is 21120011121149. The reversal of 21120011121122 is 22112111002112.

It can be written as a sum of positive squares in 2 ways, for example, as 20946997550521 + 173013570601 = 4576789^2 + 415949^2 .

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 21120011121122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15128947097 + ... + 15128948492.

Almost surely, 2^{21120011121122} is an apocalyptic number.

21120011121122 is a deficient number, since it is larger than the sum of its proper divisors (10650779248378).

21120011121122 is a wasteful number, since it uses less digits than its factorization.

21120011121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30257895940.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21120011121122 its reverse (22112111002112), we get a palindrome (43232122123234).

The spelling of 21120011121122 in words is "twenty-one trillion, one hundred twenty billion, eleven million, one hundred twenty-one thousand, one hundred twenty-two".