221101212002022 has 96 divisors (see below), whose sum is σ = 533782089285120. Its totient is φ = 65567453952960.

The previous prime is 221101212001897. The next prime is 221101212002059. The reversal of 221101212002022 is 220200212101122.

It is a happy number.

221101212002022 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 = 221101212001986 and 221101212002004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81706104 + ... + 84368772.

It is an arithmetic number, because the mean of its divisors is an integer number (5560230096720).

Almost surely, 2^{221101212002022} is an apocalyptic number.

221101212002022 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 221101212002022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266891044642560).

221101212002022 is an abundant number, since it is smaller than the sum of its proper divisors (312680877283098).

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

221101212002022 is a wasteful number, since it uses less digits than its factorization.

221101212002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671658 (or 2671655 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221101212002022 its reverse (220200212101122), we get a palindrome (441301424103144).

The spelling of 221101212002022 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twelve million, two thousand, twenty-two".