100113020012221 has 4 divisors (see below), whose sum is σ = 100113825492700. Its totient is φ = 100112214531744.

The previous prime is 100113020012219. The next prime is 100113020012297. The reversal of 100113020012221 is 122210020311001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5895130584121 + 94217889428100 = 2427989^2 + 9706590^2 .

It is a cyclic number.

It is not a de Polignac number, because 100113020012221 - 2¹ = 100113020012219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100113020012195 and 100113020012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100113020010221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402553776 + ... + 402802393.

It is an arithmetic number, because the mean of its divisors is an integer number (25028456373175).

Almost surely, 2^{100113020012221} is an apocalyptic number.

It is an amenable number.

100113020012221 is a deficient number, since it is larger than the sum of its proper divisors (805480479).

100113020012221 is an equidigital number, since it uses as much as digits as its factorization.

100113020012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805480478.

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

Adding to 100113020012221 its reverse (122210020311001), we get a palindrome (222323040323222).

The spelling of 100113020012221 in words is "one hundred trillion, one hundred thirteen billion, twenty million, twelve thousand, two hundred twenty-one".