100002121222220 has 36 divisors (see below), whose sum is σ = 244290896130960. Its totient is φ = 34286441561568.

The previous prime is 100002121222183. The next prime is 100002121222231. The reversal of 100002121222220 is 22222121200001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51021489440 + ... + 51021491399.

It is an arithmetic number, because the mean of its divisors is an integer number (6785858225860).

Almost surely, 2^{100002121222220} is an apocalyptic number.

100002121222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100002121222220 is an abundant number, since it is smaller than the sum of its proper divisors (144288774908740).

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

100002121222220 is a wasteful number, since it uses less digits than its factorization.

100002121222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102042980862 (or 102042980853 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100002121222220 its reverse (22222121200001), we get a palindrome (122224242422221).

The spelling of 100002121222220 in words is "one hundred trillion, two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty".