21112112222022 has 8 divisors (see below), whose sum is σ = 42224224444056. Its totient is φ = 7037370740672.

The previous prime is 21112112221987. The next prime is 21112112222023. The reversal of 21112112222022 is 22022221121112.

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

21112112222022 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21112112222022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112112222023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759342685163 + ... + 1759342685174.

It is an arithmetic number, because the mean of its divisors is an integer number (5278028055507).

Almost surely, 2^{21112112222022} is an apocalyptic number.

21112112222022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112112222022 is a wasteful number, since it uses less digits than its factorization.

21112112222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518685370342.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21112112222022 its reverse (22022221121112), we get a palindrome (43134333343134).

The spelling of 21112112222022 in words is "twenty-one trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty-two thousand, twenty-two".