21333431041 has 16 divisors (see below), whose sum is σ = 23168073600. Its totient is φ = 19527072768.

The previous prime is 21333431033. The next prime is 21333431047. The reversal of 21333431041 is 14013433312.

It is not a de Polignac number, because 21333431041 - 2³ = 21333431033 is a prime.

It is a super-2 number, since 2×21333431041² (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 = 21333430997 and 21333431015.

It is not an unprimeable number, because it can be changed into a prime (21333431047) 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, 822625 + ... + 848161.

It is an arithmetic number, because the mean of its divisors is an integer number (1448004600).

Almost surely, 2^21333431041 is an apocalyptic number.

It is an amenable number.

21333431041 is a deficient number, since it is larger than the sum of its proper divisors (1834642559).

21333431041 is a wasteful number, since it uses less digits than its factorization.

21333431041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26088.

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

Adding to 21333431041 its reverse (14013433312), we get a palindrome (35346864353).

The spelling of 21333431041 in words is "twenty-one billion, three hundred thirty-three million, four hundred thirty-one thousand, forty-one".