21233120003031 has 4 divisors (see below), whose sum is σ = 28310826670712. Its totient is φ = 14155413335352.

The previous prime is 21233120003027. The next prime is 21233120003089. The reversal of 21233120003031 is 13030002133212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21233120003031 - 2² = 21233120003027 is a prime.

It is a super-2 number, since 2×21233120003031² (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 = 21233120002989 and 21233120003007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233120003831) 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, 3538853333836 + ... + 3538853333841.

It is an arithmetic number, because the mean of its divisors is an integer number (7077706667678).

Almost surely, 2^{21233120003031} is an apocalyptic number.

21233120003031 is a deficient number, since it is larger than the sum of its proper divisors (7077706667681).

21233120003031 is an equidigital number, since it uses as much as digits as its factorization.

21233120003031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077706667680.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21233120003031 its reverse (13030002133212), we get a palindrome (34263122136243).

The spelling of 21233120003031 in words is "twenty-one trillion, two hundred thirty-three billion, one hundred twenty million, three thousand, thirty-one".