1222001213244 has 192 divisors, whose sum is σ = 3320801971200. Its totient is φ = 342560858112.

The previous prime is 1222001213243. The next prime is 1222001213333. The reversal of 1222001213244 is 4423121002221.

It is a super-2 number, since 2×1222001213244² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222001213243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 590623042 + ... + 590625110.

It is an arithmetic number, because the mean of its divisors is an integer number (17295843600).

Almost surely, 2^{1222001213244} is an apocalyptic number.

1222001213244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222001213244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1660400985600).

1222001213244 is an abundant number, since it is smaller than the sum of its proper divisors (2098800757956).

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

1222001213244 is a wasteful number, since it uses less digits than its factorization.

1222001213244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772 (or 2770 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1222001213244 its reverse (4423121002221), we get a palindrome (5645122215465).

The spelling of 1222001213244 in words is "one trillion, two hundred twenty-two billion, one million, two hundred thirteen thousand, two hundred forty-four".