1222340440220 has 96 divisors (see below), whose sum is σ = 2759823360000. Its totient is φ = 453361459968.

The previous prime is 1222340440183. The next prime is 1222340440231. The reversal of 1222340440220 is 220440432221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222340440220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5015141 + ... + 5253219.

It is an arithmetic number, because the mean of its divisors is an integer number (28748160000).

Almost surely, 2^{1222340440220} is an apocalyptic number.

1222340440220 is a gapful number since it is divisible by the number (10) 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 1222340440220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1379911680000).

1222340440220 is an abundant number, since it is smaller than the sum of its proper divisors (1537482919780).

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

1222340440220 is a wasteful number, since it uses less digits than its factorization.

1222340440220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238395 (or 238393 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 1222340440220 its reverse (220440432221), we get a palindrome (1442780872441).

The spelling of 1222340440220 in words is "one trillion, two hundred twenty-two billion, three hundred forty million, four hundred forty thousand, two hundred twenty".