102022110122221 has 4 divisors (see below), whose sum is σ = 103694603730844. Its totient is φ = 100349616513600.

The previous prime is 102022110122213. The next prime is 102022110122267. The reversal of 102022110122221 is 122221011220201.

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 5098360782025 + 96923749340196 = 2257955^2 + 9844986^2 .

It is a cyclic number.

It is not a de Polignac number, because 102022110122221 - 2³ = 102022110122213 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 (102022110122921) 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, 836246804220 + ... + 836246804341.

It is an arithmetic number, because the mean of its divisors is an integer number (25923650932711).

Almost surely, 2^{102022110122221} is an apocalyptic number.

It is an amenable number.

102022110122221 is a deficient number, since it is larger than the sum of its proper divisors (1672493608623).

102022110122221 is an equidigital number, since it uses as much as digits as its factorization.

102022110122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672493608622.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102022110122221 its reverse (122221011220201), we get a palindrome (224243121342422).

The spelling of 102022110122221 in words is "one hundred two trillion, twenty-two billion, one hundred ten million, one hundred twenty-two thousand, two hundred twenty-one".