102221533 has 2 divisors, whose sum is σ = 102221534. Its totient is φ = 102221532.

The previous prime is 102221531. The next prime is 102221579. The reversal of 102221533 is 335122201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100040004 + 2181529 = 10002^2 + 1477^2 .

It is a cyclic number.

It is not a de Polignac number, because 102221533 - 2¹ = 102221531 is a prime.

Together with 102221531, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 102221533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102221531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110766 + 51110767.

It is an arithmetic number, because the mean of its divisors is an integer number (51110767).

Almost surely, 2^102221533 is an apocalyptic number.

It is an amenable number.

102221533 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221533 is an equidigital number, since it uses as much as digits as its factorization.

102221533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 102221533 is about 10110.4665075356. The cubic root of 102221533 is about 467.5708880466.

Adding to 102221533 its reverse (335122201), we get a palindrome (437343734).

The spelling of 102221533 in words is "one hundred two million, two hundred twenty-one thousand, five hundred thirty-three".