21112012222022 has 4 divisors (see below), whose sum is σ = 31668018333036. Its totient is φ = 10556006111010.

The previous prime is 21112012222001. The next prime is 21112012222031. The reversal of 21112012222022 is 22022221021112.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21112012221985 and 21112012222003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278003055504 + ... + 5278003055507.

It is an arithmetic number, because the mean of its divisors is an integer number (7917004583259).

Almost surely, 2^{21112012222022} is an apocalyptic number.

21112012222022 is a deficient number, since it is larger than the sum of its proper divisors (10556006111014).

21112012222022 is a wasteful number, since it uses less digits than its factorization.

21112012222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556006111013.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21112012222022 its reverse (22022221021112), we get a palindrome (43134233243134).

The spelling of 21112012222022 in words is "twenty-one trillion, one hundred twelve billion, twelve million, two hundred twenty-two thousand, twenty-two".