2201221121022 has 128 divisors (see below), whose sum is σ = 6100500280320. Its totient is φ = 571569592320.

The previous prime is 2201221121017. The next prime is 2201221121063. The reversal of 2201221121022 is 2201211221022.

It is a happy number.

2201221121022 is a `hidden beast` number, since 220 + 1 + 2 + 211 + 210 + 22 = 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 = 2201221120986 and 2201221121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13695558 + ... + 13855350.

It is an arithmetic number, because the mean of its divisors is an integer number (47660158440).

Almost surely, 2^{2201221121022} is an apocalyptic number.

2201221121022 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 2201221121022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3050250140160).

2201221121022 is an abundant number, since it is smaller than the sum of its proper divisors (3899279159298).

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

2201221121022 is a wasteful number, since it uses less digits than its factorization.

2201221121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163135 (or 163129 counting only the distinct ones).

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

Adding to 2201221121022 its reverse (2201211221022), we get a palindrome (4402432342044).

The spelling of 2201221121022 in words is "two trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, twenty-two".