1002220987236 has 96 divisors (see below), whose sum is σ = 2791360266240. Its totient is φ = 273646353024.

The previous prime is 1002220987211. The next prime is 1002220987237. The reversal of 1002220987236 is 6327890222001.

It is a super-3 number, since 3×1002220987236³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1002220987237) 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, 1861470 + ... + 2338698.

It is an arithmetic number, because the mean of its divisors is an integer number (29076669440).

Almost surely, 2^{1002220987236} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002220987236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395680133120).

1002220987236 is an abundant number, since it is smaller than the sum of its proper divisors (1789139279004).

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

1002220987236 is a wasteful number, since it uses less digits than its factorization.

1002220987236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478353 (or 478351 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 1002220987236 in words is "one trillion, two billion, two hundred twenty million, nine hundred eighty-seven thousand, two hundred thirty-six".