102221211401 has 2 divisors, whose sum is σ = 102221211402. Its totient is φ = 102221211400.

The previous prime is 102221211397. The next prime is 102221211403. The reversal of 102221211401 is 104112122201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95876929600 + 6344281801 = 309640^2 + 79651^2 .

It is a cyclic number.

It is not a de Polignac number, because 102221211401 - 2² = 102221211397 is a prime.

Together with 102221211403, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102221211401.

It is not a weakly prime, because it can be changed into another prime (102221211403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110605700 + 51110605701.

It is an arithmetic number, because the mean of its divisors is an integer number (51110605701).

Almost surely, 2^102221211401 is an apocalyptic number.

It is an amenable number.

102221211401 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221211401 is an equidigital number, since it uses as much as digits as its factorization.

102221211401 is an evil number, because the sum of its binary digits is even.

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

Adding to 102221211401 its reverse (104112122201), we get a palindrome (206333333602).

The spelling of 102221211401 in words is "one hundred two billion, two hundred twenty-one million, two hundred eleven thousand, four hundred one".