100022120221 has 2 divisors, whose sum is σ = 100022120222. Its totient is φ = 100022120220.

The previous prime is 100022120213. The next prime is 100022120267. The reversal of 100022120221 is 122021220001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99342214596 + 679905625 = 315186^2 + 26075^2 .

It is an emirp because it is prime and its reverse (122021220001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100022120221 - 2³ = 100022120213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100022120921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50011060110 + 50011060111.

It is an arithmetic number, because the mean of its divisors is an integer number (50011060111).

Almost surely, 2^100022120221 is an apocalyptic number.

It is an amenable number.

100022120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100022120221 is an equidigital number, since it uses as much as digits as its factorization.

100022120221 is an evil number, because the sum of its binary digits is even.

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

Adding to 100022120221 its reverse (122021220001), we get a palindrome (222043340222).

The spelling of 100022120221 in words is "one hundred billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".