100220211201221 has 4 divisors (see below), whose sum is σ = 105494959159200. Its totient is φ = 94945463243244.

The previous prime is 100220211201217. The next prime is 100220211201223. The reversal of 100220211201221 is 122102112022001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100220211201221 - 2² = 100220211201217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100220211201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220211201223) 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, 2637373978961 + ... + 2637373978998.

It is an arithmetic number, because the mean of its divisors is an integer number (26373739789800).

Almost surely, 2^{100220211201221} is an apocalyptic number.

It is an amenable number.

100220211201221 is a deficient number, since it is larger than the sum of its proper divisors (5274747957979).

100220211201221 is an equidigital number, since it uses as much as digits as its factorization.

100220211201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5274747957978.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100220211201221 its reverse (122102112022001), we get a palindrome (222322323223222).

The spelling of 100220211201221 in words is "one hundred trillion, two hundred twenty billion, two hundred eleven million, two hundred one thousand, two hundred twenty-one".