100122222221000 has 256 divisors, whose sum is σ = 273294602380800. Its totient is φ = 33624678912000.

The previous prime is 100122222220987. The next prime is 100122222221059. The reversal of 100122222221000 is 122222221001.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 100122222221000.

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, 65910020 + ... + 67411980.

It is an arithmetic number, because the mean of its divisors is an integer number (1067557040550).

Almost surely, 2^{100122222221000} is an apocalyptic number.

100122222221000 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 100122222221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136647301190400).

100122222221000 is an abundant number, since it is smaller than the sum of its proper divisors (173172380159800).

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

100122222221000 is a wasteful number, since it uses less digits than its factorization.

100122222221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502185 (or 1502171 counting only the distinct ones).

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

Adding to 100122222221000 its reverse (122222221001), we get a palindrome (100244444442001).

Subtracting from 100122222221000 its reverse (122222221001), we obtain a palindrome (99999999999999).

The spelling of 100122222221000 in words is "one hundred trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand".