100011220112021 has 8 divisors (see below), whose sum is σ = 101898690851160. Its totient is φ = 98123766653952.

The previous prime is 100011220111961. The next prime is 100011220112047. The reversal of 100011220112021 is 120211022110001.

It can be written as a sum of positive squares in 4 ways, for example, as 10155248092900 + 89855972019121 = 3186730^2 + 9479239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100011220112021 is a prime.

It is a super-2 number, since 2×100011220112021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100011220111987 and 100011220112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100011220118021) 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, 7674941 + ... + 16091213.

It is an arithmetic number, because the mean of its divisors is an integer number (12737336356395).

Almost surely, 2^{100011220112021} is an apocalyptic number.

It is an amenable number.

100011220112021 is a deficient number, since it is larger than the sum of its proper divisors (1887470739139).

100011220112021 is an equidigital number, since it uses as much as digits as its factorization.

100011220112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8640535.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100011220112021 its reverse (120211022110001), we get a palindrome (220222242222022).

The spelling of 100011220112021 in words is "one hundred trillion, eleven billion, two hundred twenty million, one hundred twelve thousand, twenty-one".