1222318353520 has 160 divisors (see below), whose sum is σ = 3235976884224. Its totient is φ = 425030707200.

The previous prime is 1222318353491. The next prime is 1222318353539. The reversal of 1222318353520 is 253538132221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222318353520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95182300 + ... + 95195140.

Almost surely, 2^{1222318353520} is an apocalyptic number.

1222318353520 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 1222318353520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617988442112).

1222318353520 is an abundant number, since it is smaller than the sum of its proper divisors (2013658530704).

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

1222318353520 is a wasteful number, since it uses less digits than its factorization.

1222318353520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17591 (or 17585 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 1222318353520 in words is "one trillion, two hundred twenty-two billion, three hundred eighteen million, three hundred fifty-three thousand, five hundred twenty".