102021222101 has 2 divisors, whose sum is σ = 102021222102. Its totient is φ = 102021222100.

The previous prime is 102021222077. The next prime is 102021222139. The reversal of 102021222101 is 101222120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83457432100 + 18563790001 = 288890^2 + 136249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102021222101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102021222701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010611050 + 51010611051.

It is an arithmetic number, because the mean of its divisors is an integer number (51010611051).

Almost surely, 2^102021222101 is an apocalyptic number.

It is an amenable number.

102021222101 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021222101 is an equidigital number, since it uses as much as digits as its factorization.

102021222101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102021222101 its reverse (101222120201), we get a palindrome (203243342302).

The spelling of 102021222101 in words is "one hundred two billion, twenty-one million, two hundred twenty-two thousand, one hundred one".