100221220022201 has 4 divisors (see below), whose sum is σ = 101919884768400. Its totient is φ = 98522555276004.

The previous prime is 100221220022179. The next prime is 100221220022221. The reversal of 100221220022201 is 102220022122001.

It is a happy number.

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 100221220022201 - 2⁶ = 100221220022137 is a prime.

It is a super-2 number, since 2×100221220022201² (a number of 29 digits) contains 22 as substring.

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 100221220022201.

It is not an unprimeable number, because it can be changed into a prime (100221220022221) 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, 849332373011 + ... + 849332373128.

It is an arithmetic number, because the mean of its divisors is an integer number (25479971192100).

Almost surely, 2^{100221220022201} is an apocalyptic number.

It is an amenable number.

100221220022201 is a deficient number, since it is larger than the sum of its proper divisors (1698664746199).

100221220022201 is an equidigital number, since it uses as much as digits as its factorization.

100221220022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698664746198.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100221220022201 its reverse (102220022122001), we get a palindrome (202441242144202).

The spelling of 100221220022201 in words is "one hundred trillion, two hundred twenty-one billion, two hundred twenty million, twenty-two thousand, two hundred one".