102133123301221 has 4 divisors (see below), whose sum is σ = 102161548888812. Its totient is φ = 102104697713632.

The previous prime is 102133123301219. The next prime is 102133123301371. The reversal of 102133123301221 is 122103321331201.

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 19702812276225 + 82430311024996 = 4438785^2 + 9079114^2 .

It is a cyclic number.

It is not a de Polignac number, because 102133123301221 - 2¹ = 102133123301219 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 (102133123305221) 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, 14212788406 + ... + 14212795591.

It is an arithmetic number, because the mean of its divisors is an integer number (25540387222203).

Almost surely, 2^{102133123301221} is an apocalyptic number.

It is an amenable number.

102133123301221 is a deficient number, since it is larger than the sum of its proper divisors (28425587591).

102133123301221 is an equidigital number, since it uses as much as digits as its factorization.

102133123301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28425587590.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 102133123301221 its reverse (122103321331201), we get a palindrome (224236444632422).

The spelling of 102133123301221 in words is "one hundred two trillion, one hundred thirty-three billion, one hundred twenty-three million, three hundred one thousand, two hundred twenty-one".