102221020221221 has 16 divisors (see below), whose sum is σ = 116501314867200. Its totient is φ = 88835425224000.

The previous prime is 102221020221193. The next prime is 102221020221239. The reversal of 102221020221221 is 122122020122201.

It is a cyclic number.

It is not a de Polignac number, because 102221020221221 - 2¹⁸ = 102221019959077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102221020221193 and 102221020221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221020221251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1586314661 + ... + 1586379098.

It is an arithmetic number, because the mean of its divisors is an integer number (7281332179200).

Almost surely, 2^{102221020221221} is an apocalyptic number.

102221020221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102221020221221 is a deficient number, since it is larger than the sum of its proper divisors (14280294645979).

102221020221221 is a wasteful number, since it uses less digits than its factorization.

102221020221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172693900.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 102221020221221 its reverse (122122020122201), we get a palindrome (224343040343422).

The spelling of 102221020221221 in words is "one hundred two trillion, two hundred twenty-one billion, twenty million, two hundred twenty-one thousand, two hundred twenty-one".