21203133301231 has 8 divisors (see below), whose sum is σ = 24232189148960. Its totient is φ = 18174086654688.

The previous prime is 21203133301211. The next prime is 21203133301249. The reversal of 21203133301231 is 13210333130212.

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 21203133301231 - 2³³ = 21194543366639 is a prime.

It is a super-2 number, since 2×21203133301231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21203133301196 and 21203133301205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203133301211) 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, 3671125 + ... + 7475521.

It is an arithmetic number, because the mean of its divisors is an integer number (3029023643620).

Almost surely, 2^{21203133301231} is an apocalyptic number.

21203133301231 is a deficient number, since it is larger than the sum of its proper divisors (3029055847729).

21203133301231 is an equidigital number, since it uses as much as digits as its factorization.

21203133301231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600593.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21203133301231 its reverse (13210333130212), we get a palindrome (34413466431443).

The spelling of 21203133301231 in words is "twenty-one trillion, two hundred three billion, one hundred thirty-three million, three hundred one thousand, two hundred thirty-one".