100111223201020 has 24 divisors (see below), whose sum is σ = 210236758636464. Its totient is φ = 40043881677696.

The previous prime is 100111223200979. The next prime is 100111223201023. The reversal of 100111223201020 is 20102322111001.

It is a junction number, because it is equal to n+sod(n) for n = 100111223200985 and 100111223201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111223201023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36622929 + ... + 39261448.

It is an arithmetic number, because the mean of its divisors is an integer number (8759864943186).

Almost surely, 2^{100111223201020} is an apocalyptic number.

100111223201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100111223201020 is an abundant number, since it is smaller than the sum of its proper divisors (110125535435444).

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

100111223201020 is a wasteful number, since it uses less digits than its factorization.

100111223201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75950349 (or 75950347 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 100111223201020 its reverse (20102322111001), we get a palindrome (120213545312021).

The spelling of 100111223201020 in words is "one hundred trillion, one hundred eleven billion, two hundred twenty-three million, two hundred one thousand, twenty".