100002222001220 has 192 divisors, whose sum is σ = 264939187709952. Its totient is φ = 30800335104000.

The previous prime is 100002222001217. The next prime is 100002222001247. The reversal of 100002222001220 is 22100222200001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 100002222001195 and 100002222001204.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56732555 + ... + 58468685.

It is an arithmetic number, because the mean of its divisors is an integer number (1379891602656).

Almost surely, 2^{100002222001220} is an apocalyptic number.

100002222001220 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 100002222001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132469593854976).

100002222001220 is an abundant number, since it is smaller than the sum of its proper divisors (164936965708732).

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

100002222001220 is a wasteful number, since it uses less digits than its factorization.

100002222001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736602 (or 1736600 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 100002222001220 its reverse (22100222200001), we get a palindrome (122102444201221).

It can be divided in two parts, 100002 and 222001220, that added together give a palindrome (222101222).

The spelling of 100002222001220 in words is "one hundred trillion, two billion, two hundred twenty-two million, one thousand, two hundred twenty".