21232541333 has 16 divisors (see below), whose sum is σ = 22944176640. Its totient is φ = 19597999344.

The previous prime is 21232541329. The next prime is 21232541387. The reversal of 21232541333 is 33314523212.

It is a happy number.

It is not a de Polignac number, because 21232541333 - 2² = 21232541329 is a prime.

It is a super-2 number, since 2×21232541333² (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 = 21232541296 and 21232541305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232547333) 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, 47243 + ... + 211416.

It is an arithmetic number, because the mean of its divisors is an integer number (1434011040).

Almost surely, 2^21232541333 is an apocalyptic number.

21232541333 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21232541333 is a deficient number, since it is larger than the sum of its proper divisors (1711635307).

21232541333 is a wasteful number, since it uses less digits than its factorization.

21232541333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258808.

The product of its digits is 12960, while the sum is 29.

The spelling of 21232541333 in words is "twenty-one billion, two hundred thirty-two million, five hundred forty-one thousand, three hundred thirty-three".