1002212012220 has 96 divisors (see below), whose sum is σ = 2879197526016. Its totient is φ = 260324467200.

The previous prime is 1002212012183. The next prime is 1002212012251. The reversal of 1002212012220 is 222102122001.

It is a super-2 number, since 2×1002212012220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1002212012220.

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, 1229437 + ... + 1875083.

It is an arithmetic number, because the mean of its divisors is an integer number (29991640896).

Almost surely, 2^{1002212012220} is an apocalyptic number.

1002212012220 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 1002212012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439598763008).

1002212012220 is an abundant number, since it is smaller than the sum of its proper divisors (1876985513796).

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

1002212012220 is a wasteful number, since it uses less digits than its factorization.

1002212012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646331 (or 646329 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1002212012220 its reverse (222102122001), we get a palindrome (1224314134221).

The spelling of 1002212012220 in words is "one trillion, two billion, two hundred twelve million, twelve thousand, two hundred twenty".