102201020011221 has 32 divisors (see below), whose sum is σ = 142285771389696. Its totient is φ = 65187203328000.

The previous prime is 102201020011171. The next prime is 102201020011267. The reversal of 102201020011221 is 122110020102201.

It is not a de Polignac number, because 102201020011221 - 2¹¹ = 102201020009173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102201020011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201020011721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21623461 + ... + 25922501.

It is an arithmetic number, because the mean of its divisors is an integer number (4446430355928).

Almost surely, 2^{102201020011221} is an apocalyptic number.

It is an amenable number.

102201020011221 is a deficient number, since it is larger than the sum of its proper divisors (40084751378475).

102201020011221 is a wasteful number, since it uses less digits than its factorization.

102201020011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302653.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102201020011221 its reverse (122110020102201), we get a palindrome (224311040113422).

The spelling of 102201020011221 in words is "one hundred two trillion, two hundred one billion, twenty million, eleven thousand, two hundred twenty-one".