100022111202221 has 4 divisors (see below), whose sum is σ = 107716119756252. Its totient is φ = 92328102648192.

The previous prime is 100022111202203. The next prime is 100022111202229. The reversal of 100022111202221 is 122202111220001.

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 4167946818025 + 95854164384196 = 2041555^2 + 9790514^2 .

It is a cyclic number.

It is not a de Polignac number, because 100022111202221 - 2³⁸ = 99747233295277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100022111202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100022111202229) 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, 3847004276996 + ... + 3847004277021.

It is an arithmetic number, because the mean of its divisors is an integer number (26929029939063).

Almost surely, 2^{100022111202221} is an apocalyptic number.

It is an amenable number.

100022111202221 is a deficient number, since it is larger than the sum of its proper divisors (7694008554031).

100022111202221 is an equidigital number, since it uses as much as digits as its factorization.

100022111202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7694008554030.

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

Adding to 100022111202221 its reverse (122202111220001), we get a palindrome (222224222422222).

The spelling of 100022111202221 in words is "one hundred trillion, twenty-two billion, one hundred eleven million, two hundred two thousand, two hundred twenty-one".