20321101133 has 8 divisors (see below), whose sum is σ = 20819083320. Its totient is φ = 19823230720.

The previous prime is 20321101127. The next prime is 20321101201. The reversal of 20321101133 is 33110112302.

It can be written as a sum of positive squares in 4 ways, for example, as 726140809 + 19594960324 = 26947^2 + 139982^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20321101133 - 2⁴ = 20321101117 is a prime.

It is a super-2 number, since 2×20321101133² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321100133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431441 + ... + 476217.

It is an arithmetic number, because the mean of its divisors is an integer number (2602385415).

Almost surely, 2^20321101133 is an apocalyptic number.

It is an amenable number.

20321101133 is a deficient number, since it is larger than the sum of its proper divisors (497982187).

20321101133 is a wasteful number, since it uses less digits than its factorization.

20321101133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55887.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20321101133 its reverse (33110112302), we get a palindrome (53431213435).

The spelling of 20321101133 in words is "twenty billion, three hundred twenty-one million, one hundred one thousand, one hundred thirty-three".