100022120100 has 216 divisors, whose sum is σ = 358486722048. Its totient is φ = 22850380800.

The previous prime is 100022120059. The next prime is 100022120101. The reversal of 100022120100 is 1021220001.

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

It is not an unprimeable number, because it can be changed into a prime (100022120101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19659757 + ... + 19664843.

Almost surely, 2^100022120100 is an apocalyptic number.

100022120100 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 100022120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179243361024).

100022120100 is an abundant number, since it is smaller than the sum of its proper divisors (258464601948).

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

100022120100 is a wasteful number, since it uses less digits than its factorization.

100022120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8235 (or 8225 counting only the distinct ones).

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

Adding to 100022120100 its reverse (1021220001), we get a palindrome (101043340101).

Subtracting from 100022120100 its reverse (1021220001), we obtain a palindrome (99000900099).

The spelling of 100022120100 in words is "one hundred billion, twenty-two million, one hundred twenty thousand, one hundred".