21120222022 has 32 divisors (see below), whose sum is σ = 34248614400. Its totient is φ = 9746909088.

The previous prime is 21120221987. The next prime is 21120222023. The reversal of 21120222022 is 22022202112.

It is a junction number, because it is equal to n+sod(n) for n = 21120221987 and 21120222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120222023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27129 + ... + 207307.

It is an arithmetic number, because the mean of its divisors is an integer number (1070269200).

Almost surely, 2^21120222022 is an apocalyptic number.

21120222022 is a deficient number, since it is larger than the sum of its proper divisors (13128392378).

21120222022 is a wasteful number, since it uses less digits than its factorization.

21120222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180300.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21120222022 its reverse (22022202112), we get a palindrome (43142424134).

The spelling of 21120222022 in words is "twenty-one billion, one hundred twenty million, two hundred twenty-two thousand, twenty-two".