21320010444233 has 16 divisors (see below), whose sum is σ = 21721726548480. Its totient is φ = 20921620165056.

The previous prime is 21320010444203. The next prime is 21320010444263. The reversal of 21320010444233 is 33244401002312.

It is an interprime number because it is at equal distance from previous prime (21320010444203) and next prime (21320010444263).

It is a cyclic number.

It is not a de Polignac number, because 21320010444233 - 2¹² = 21320010440137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21320010444196 and 21320010444205.

It is not an unprimeable number, because it can be changed into a prime (21320010444203) 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, 117234491 + ... + 117416207.

It is an arithmetic number, because the mean of its divisors is an integer number (1357607909280).

Almost surely, 2^{21320010444233} is an apocalyptic number.

It is an amenable number.

21320010444233 is a deficient number, since it is larger than the sum of its proper divisors (401716104247).

21320010444233 is a wasteful number, since it uses less digits than its factorization.

21320010444233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190856.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21320010444233 its reverse (33244401002312), we get a palindrome (54564411446545).

The spelling of 21320010444233 in words is "twenty-one trillion, three hundred twenty billion, ten million, four hundred forty-four thousand, two hundred thirty-three".