30201332133221 has 4 divisors (see below), whose sum is σ = 31977881082252. Its totient is φ = 28424783184192.

The previous prime is 30201332133199. The next prime is 30201332133227. The reversal of 30201332133221 is 12233123310203.

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 17523182044900 + 12678150088321 = 4186070^2 + 3560639^2 .

It is a cyclic number.

It is not a de Polignac number, because 30201332133221 - 2¹⁰ = 30201332132197 is a prime.

It is a super-2 number, since 2×30201332133221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30201332133227) 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, 888274474490 + ... + 888274474523.

It is an arithmetic number, because the mean of its divisors is an integer number (7994470270563).

Almost surely, 2^{30201332133221} is an apocalyptic number.

It is an amenable number.

30201332133221 is a deficient number, since it is larger than the sum of its proper divisors (1776548949031).

30201332133221 is a wasteful number, since it uses less digits than its factorization.

30201332133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776548949030.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 30201332133221 its reverse (12233123310203), we get a palindrome (42434455443424).

The spelling of 30201332133221 in words is "thirty trillion, two hundred one billion, three hundred thirty-two million, one hundred thirty-three thousand, two hundred twenty-one".