100200021211021 has 4 divisors (see below), whose sum is σ = 100200718985500. Its totient is φ = 100199323436544.

The previous prime is 100200021210997. The next prime is 100200021211049. The reversal of 100200021211021 is 120112120002001.

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 90809559654025 + 9390461556996 = 9529405^2 + 3064386^2 .

It is a cyclic number.

It is not a de Polignac number, because 100200021211021 - 2³¹ = 100197873727373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100200021210992 and 100200021211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100200021211091) 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, 348671796 + ... + 348959053.

It is an arithmetic number, because the mean of its divisors is an integer number (25050179746375).

Almost surely, 2^{100200021211021} is an apocalyptic number.

It is an amenable number.

100200021211021 is a deficient number, since it is larger than the sum of its proper divisors (697774479).

100200021211021 is an equidigital number, since it uses as much as digits as its factorization.

100200021211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697774478.

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

Adding to 100200021211021 its reverse (120112120002001), we get a palindrome (220312141213022).

The spelling of 100200021211021 in words is "one hundred trillion, two hundred billion, twenty-one million, two hundred eleven thousand, twenty-one".