100210022221 has 4 divisors (see below), whose sum is σ = 100478682172. Its totient is φ = 99941362272.

The previous prime is 100210022197. The next prime is 100210022273. The reversal of 100210022221 is 122220012001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122220012001 = 28403 ⋅4303067.

It can be written as a sum of positive squares in 2 ways, for example, as 72449797225 + 27760224996 = 269165^2 + 166614^2 .

It is a cyclic number.

It is not a de Polignac number, because 100210022221 - 2⁷ = 100210022093 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 (100210052221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134329416 + ... + 134330161.

It is an arithmetic number, because the mean of its divisors is an integer number (25119670543).

Almost surely, 2^100210022221 is an apocalyptic number.

It is an amenable number.

100210022221 is a deficient number, since it is larger than the sum of its proper divisors (268659951).

100210022221 is an equidigital number, since it uses as much as digits as its factorization.

100210022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268659950.

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

Adding to 100210022221 its reverse (122220012001), we get a palindrome (222430034222).

The spelling of 100210022221 in words is "one hundred billion, two hundred ten million, twenty-two thousand, two hundred twenty-one".