102021332402221 has 4 divisors (see below), whose sum is σ = 102021423101244. Its totient is φ = 102021241703200.

The previous prime is 102021332402203. The next prime is 102021332402267. The reversal of 102021332402221 is 122204233120201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41918308569225 + 60103023832996 = 6474435^2 + 7752614^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021332402221 - 2¹³ = 102021332394029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021332402921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43640800 + ... + 45919081.

It is an arithmetic number, because the mean of its divisors is an integer number (25505355775311).

Almost surely, 2^{102021332402221} is an apocalyptic number.

It is an amenable number.

102021332402221 is a deficient number, since it is larger than the sum of its proper divisors (90699023).

102021332402221 is an equidigital number, since it uses as much as digits as its factorization.

102021332402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90699022.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 102021332402221 its reverse (122204233120201), we get a palindrome (224225565522422).

The spelling of 102021332402221 in words is "one hundred two trillion, twenty-one billion, three hundred thirty-two million, four hundred two thousand, two hundred twenty-one".