21003223121233 has 8 divisors (see below), whose sum is σ = 21492679208000. Its totient is φ = 20513812899888.

The previous prime is 21003223121213. The next prime is 21003223121239. The reversal of 21003223121233 is 33212132230012.

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 21003223121233 - 2⁵ = 21003223121201 is a prime.

It is a super-2 number, since 2×21003223121233² (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 = 21003223121198 and 21003223121207.

It is not an unprimeable number, because it can be changed into a prime (21003223121239) 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, 10538958 + ... + 12372391.

It is an arithmetic number, because the mean of its divisors is an integer number (2686584901000).

Almost surely, 2^{21003223121233} is an apocalyptic number.

It is an amenable number.

21003223121233 is a deficient number, since it is larger than the sum of its proper divisors (489456086767).

21003223121233 is a wasteful number, since it uses less digits than its factorization.

21003223121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22932711.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21003223121233 its reverse (33212132230012), we get a palindrome (54215355351245).

The spelling of 21003223121233 in words is "twenty-one trillion, three billion, two hundred twenty-three million, one hundred twenty-one thousand, two hundred thirty-three".