20301221133 has 16 divisors (see below), whose sum is σ = 30078624000. Its totient is φ = 13532914080.

The previous prime is 20301221113. The next prime is 20301221141. The reversal of 20301221133 is 33112210302.

It is not a de Polignac number, because 20301221133 - 2²² = 20297026829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301221113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343068 + ... + 397866.

It is an arithmetic number, because the mean of its divisors is an integer number (1879914000).

Almost surely, 2^20301221133 is an apocalyptic number.

It is an amenable number.

20301221133 is a deficient number, since it is larger than the sum of its proper divisors (9777402867).

20301221133 is a wasteful number, since it uses less digits than its factorization.

20301221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68529 (or 68523 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20301221133 its reverse (33112210302), we get a palindrome (53413431435).

The spelling of 20301221133 in words is "twenty billion, three hundred one million, two hundred twenty-one thousand, one hundred thirty-three".