100202012221 has 8 divisors (see below), whose sum is σ = 110709129024. Its totient is φ = 90207437760.

The previous prime is 100202012177. The next prime is 100202012243. The reversal of 100202012221 is 122210202001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 100202012221 - 2¹⁹ = 100201487933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202012821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128135175 + ... + 128135956.

It is an arithmetic number, because the mean of its divisors is an integer number (13838641128).

Almost surely, 2^100202012221 is an apocalyptic number.

It is an amenable number.

100202012221 is a deficient number, since it is larger than the sum of its proper divisors (10507116803).

100202012221 is a wasteful number, since it uses less digits than its factorization.

100202012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256271171.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100202012221 its reverse (122210202001), we get a palindrome (222412214222).

The spelling of 100202012221 in words is "one hundred billion, two hundred two million, twelve thousand, two hundred twenty-one".