100011221010020 has 24 divisors (see below), whose sum is σ = 212981642491968. Its totient is φ = 39441044904800.

The previous prime is 100011221009993. The next prime is 100011221010023. The reversal of 100011221010020 is 20010122110001.

It is a junction number, because it is equal to n+sod(n) for n = 100011221009983 and 100011221010010.

It is not an unprimeable number, because it can be changed into a prime (100011221010023) 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, 35215217246 + ... + 35215220085.

It is an arithmetic number, because the mean of its divisors is an integer number (8874235103832).

Almost surely, 2^{100011221010020} is an apocalyptic number.

100011221010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100011221010020 is an abundant number, since it is smaller than the sum of its proper divisors (112970421481948).

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

100011221010020 is a wasteful number, since it uses less digits than its factorization.

100011221010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70430437411 (or 70430437409 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100011221010020 its reverse (20010122110001), we get a palindrome (120021343120021).

The spelling of 100011221010020 in words is "one hundred trillion, eleven billion, two hundred twenty-one million, ten thousand, twenty".