1222635016240 has 160 divisors (see below), whose sum is σ = 3148979452416. Its totient is φ = 437743687680.

The previous prime is 1222635016193. The next prime is 1222635016243. The reversal of 1222635016240 is 426105362221.

It is a junction number, because it is equal to n+sod(n) for n = 1222635016196 and 1222635016205.

It is not an unprimeable number, because it can be changed into a prime (1222635016243) 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, 37692669 + ... + 37725091.

Almost surely, 2^{1222635016240} is an apocalyptic number.

1222635016240 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 1222635016240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1574489726208).

1222635016240 is an abundant number, since it is smaller than the sum of its proper divisors (1926344436176).

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

1222635016240 is a wasteful number, since it uses less digits than its factorization.

1222635016240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33107 (or 33101 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 1222635016240 in words is "one trillion, two hundred twenty-two billion, six hundred thirty-five million, sixteen thousand, two hundred forty".