21121441333 has 8 divisors (see below), whose sum is σ = 22652589600. Its totient is φ = 19632242448.

The previous prime is 21121441321. The next prime is 21121441337. The reversal of 21121441333 is 33314412112.

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 21121441333 - 2²⁵ = 21087886901 is a prime.

It is a super-2 number, since 2×21121441333² (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 = 21121441298 and 21121441307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21121441337) 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, 10486303 + ... + 10488316.

It is an arithmetic number, because the mean of its divisors is an integer number (2831573700).

Almost surely, 2^21121441333 is an apocalyptic number.

It is an amenable number.

21121441333 is a deficient number, since it is larger than the sum of its proper divisors (1531148267).

21121441333 is a wasteful number, since it uses less digits than its factorization.

21121441333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20974691.

The product of its digits is 1728, while the sum is 25.

Adding to 21121441333 its reverse (33314412112), we get a palindrome (54435853445).

The spelling of 21121441333 in words is "twenty-one billion, one hundred twenty-one million, four hundred forty-one thousand, three hundred thirty-three".