1222122553344 has 480 divisors, whose sum is σ = 4514611046400. Its totient is φ = 317425582080.

The previous prime is 1222122553321. The next prime is 1222122553349. The reversal of 1222122553344 is 4433552212221.

1222122553344 is a `hidden beast` number, since 1 + 22 + 21 + 22 + 553 + 3 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1222122553299 and 1222122553308.

It is not an unprimeable number, because it can be changed into a prime (1222122553349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34044397 + ... + 34080275.

It is an arithmetic number, because the mean of its divisors is an integer number (9405439680).

Almost surely, 2^{1222122553344} is an apocalyptic number.

1222122553344 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 1222122553344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2257305523200).

1222122553344 is an abundant number, since it is smaller than the sum of its proper divisors (3292488493056).

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

1222122553344 is an equidigital number, since it uses as much as digits as its factorization.

1222122553344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35934 (or 35902 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 1222122553344 its reverse (4433552212221), we get a palindrome (5655674765565).

The spelling of 1222122553344 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, five hundred fifty-three thousand, three hundred forty-four".