102021201202221 has 48 divisors (see below), whose sum is σ = 174226710053760. Its totient is φ = 56286489168000.

The previous prime is 102021201202199. The next prime is 102021201202289. The reversal of 102021201202221 is 122202102120201.

It is a happy number.

102021201202221 is a `hidden beast` number, since 1 + 0 + 20 + 21 + 201 + 202 + 221 = 666.

It is not a de Polignac number, because 102021201202221 - 2⁹ = 102021201201709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102021201202194 and 102021201202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021201202021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100897266 + ... + 101903388.

It is an arithmetic number, because the mean of its divisors is an integer number (3629723126120).

Almost surely, 2^{102021201202221} is an apocalyptic number.

It is an amenable number.

102021201202221 is a deficient number, since it is larger than the sum of its proper divisors (72205508851539).

102021201202221 is a wasteful number, since it uses less digits than its factorization.

102021201202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061666 (or 1061663 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102021201202221 its reverse (122202102120201), we get a palindrome (224223303322422).

The spelling of 102021201202221 in words is "one hundred two trillion, twenty-one billion, two hundred one million, two hundred two thousand, two hundred twenty-one".