21121232333 has 8 divisors (see below), whose sum is σ = 22245996000. Its totient is φ = 19997780688.

The previous prime is 21121232299. The next prime is 21121232339. The reversal of 21121232333 is 33323212112.

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 21121232333 - 2³⁰ = 20047490509 is a prime.

It is a super-2 number, since 2×21121232333² (a number of 21 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 = 21121232299 and 21121232308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121232339) 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, 294866 + ... + 359427.

It is an arithmetic number, because the mean of its divisors is an integer number (2780749500).

Almost surely, 2^21121232333 is an apocalyptic number.

It is an amenable number.

21121232333 is a deficient number, since it is larger than the sum of its proper divisors (1124763667).

21121232333 is a wasteful number, since it uses less digits than its factorization.

21121232333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656011.

The product of its digits is 1296, while the sum is 23.

Adding to 21121232333 its reverse (33323212112), we get a palindrome (54444444445).

The spelling of 21121232333 in words is "twenty-one billion, one hundred twenty-one million, two hundred thirty-two thousand, three hundred thirty-three".