21320441333203 has 4 divisors (see below), whose sum is σ = 21320618370688. Its totient is φ = 21320264295720.

The previous prime is 21320441333183. The next prime is 21320441333221. The reversal of 21320441333203 is 30233314402312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21320441333203 - 2¹³ = 21320441325011 is a prime.

It is a super-2 number, since 2×21320441333203² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21320441333293) 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, 88337976 + ... + 88578997.

It is an arithmetic number, because the mean of its divisors is an integer number (5330154592672).

Almost surely, 2^{21320441333203} is an apocalyptic number.

21320441333203 is a deficient number, since it is larger than the sum of its proper divisors (177037485).

21320441333203 is a wasteful number, since it uses less digits than its factorization.

21320441333203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177037484.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 21320441333203 its reverse (30233314402312), we get a palindrome (51553755735515).

The spelling of 21320441333203 in words is "twenty-one trillion, three hundred twenty billion, four hundred forty-one million, three hundred thirty-three thousand, two hundred three".