20132303021 has 8 divisors (see below), whose sum is σ = 20627356344. Its totient is φ = 19637441280.

The previous prime is 20132303003. The next prime is 20132303047. The reversal of 20132303021 is 12030323102.

It can be written as a sum of positive squares in 4 ways, for example, as 1206798121 + 18925504900 = 34739^2 + 137570^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132303021 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 (20132300021) 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, 177761 + ... + 268073.

It is an arithmetic number, because the mean of its divisors is an integer number (2578419543).

Almost surely, 2^20132303021 is an apocalyptic number.

It is an amenable number.

20132303021 is a deficient number, since it is larger than the sum of its proper divisors (495053323).

20132303021 is an equidigital number, since it uses as much as digits as its factorization.

20132303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95791.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20132303021 its reverse (12030323102), we get a palindrome (32162626123).

The spelling of 20132303021 in words is "twenty billion, one hundred thirty-two million, three hundred three thousand, twenty-one".