21122000222022 has 192 divisors, whose sum is σ = 53102372843520. Its totient is φ = 5942939977728.

The previous prime is 21122000221957. The next prime is 21122000222023. The reversal of 21122000222022 is 22022200022112.

It is a super-2 number, since 2×21122000222022² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21122000221986 and 21122000222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122000222023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11435841103 + ... + 11435842949.

It is an arithmetic number, because the mean of its divisors is an integer number (276574858560).

Almost surely, 2^{21122000222022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21122000222022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26551186421760).

21122000222022 is an abundant number, since it is smaller than the sum of its proper divisors (31980372621498).

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

21122000222022 is a wasteful number, since it uses less digits than its factorization.

21122000222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315 (or 4312 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21122000222022 its reverse (22022200022112), we get a palindrome (43144200244134).

The spelling of 21122000222022 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two thousand, twenty-two".