100000121022 has 64 divisors (see below), whose sum is σ = 229093300800. Its totient is φ = 32313116160.

The previous prime is 100000121017. The next prime is 100000121041. The reversal of 100000121022 is 220121000001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100000120995 and 100000121013.

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, 203754 + ... + 491442.

It is an arithmetic number, because the mean of its divisors is an integer number (3579582825).

Almost surely, 2^100000121022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100000121022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114546650400).

100000121022 is an abundant number, since it is smaller than the sum of its proper divisors (129093179778).

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

100000121022 is a wasteful number, since it uses less digits than its factorization.

100000121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287898 (or 287892 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100000121022 its reverse (220121000001), we get a palindrome (320121121023).

The spelling of 100000121022 in words is "one hundred billion, one hundred twenty-one thousand, twenty-two".