21112220222122 has 16 divisors (see below), whose sum is σ = 31677421565952. Its totient is φ = 10553079937360.

The previous prime is 21112220222117. The next prime is 21112220222183. The reversal of 21112220222122 is 22122202221112.

It is a super-2 number, since 2×21112220222122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21112220222093 and 21112220222102.

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 7 ways as a sum of consecutive naturals, for example, 251135448 + ... + 251219500.

It is an arithmetic number, because the mean of its divisors is an integer number (1979838847872).

Almost surely, 2^{21112220222122} is an apocalyptic number.

21112220222122 is a deficient number, since it is larger than the sum of its proper divisors (10565201343830).

21112220222122 is a wasteful number, since it uses less digits than its factorization.

21112220222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118613.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21112220222122 its reverse (22122202221112), we get a palindrome (43234422443234).

The spelling of 21112220222122 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty-two".