100110221002021 has 4 divisors (see below), whose sum is σ = 100111223396844. Its totient is φ = 100109218607200.

The previous prime is 100110221001997. The next prime is 100110221002153. The reversal of 100110221002021 is 120200122011001.

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 99996780025921 + 113440976100 = 9999839^2 + 336810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100110221002021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100110221001992 and 100110221002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100110221002721) 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, 501047590 + ... + 501247351.

It is an arithmetic number, because the mean of its divisors is an integer number (25027805849211).

Almost surely, 2^{100110221002021} is an apocalyptic number.

It is an amenable number.

100110221002021 is a deficient number, since it is larger than the sum of its proper divisors (1002394823).

100110221002021 is an equidigital number, since it uses as much as digits as its factorization.

100110221002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002394822.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100110221002021 its reverse (120200122011001), we get a palindrome (220310343013022).

The spelling of 100110221002021 in words is "one hundred trillion, one hundred ten billion, two hundred twenty-one million, two thousand, twenty-one".