2212220001222 has 384 divisors, whose sum is σ = 6560206848000. Its totient is φ = 521660240640.

The previous prime is 2212220001197. The next prime is 2212220001227. The reversal of 2212220001222 is 2221000222122.

2212220001222 is a `hidden beast` number, since 221 + 2 + 220 + 0 + 0 + 1 + 222 = 666.

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 = 2212220001195 and 2212220001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212220001227) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 54522979 + ... + 54563537.

It is an arithmetic number, because the mean of its divisors is an integer number (17083872000).

Almost surely, 2^{2212220001222} is an apocalyptic number.

2212220001222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212220001222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3280103424000).

2212220001222 is an abundant number, since it is smaller than the sum of its proper divisors (4347986846778).

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

2212220001222 is a wasteful number, since it uses less digits than its factorization.

2212220001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40696 (or 40693 counting only the distinct ones).

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

Adding to 2212220001222 its reverse (2221000222122), we get a palindrome (4433220223344).

The spelling of 2212220001222 in words is "two trillion, two hundred twelve billion, two hundred twenty million, one thousand, two hundred twenty-two".