21342233043 has 24 divisors (see below), whose sum is σ = 31562868480. Its totient is φ = 13889216880.

The previous prime is 21342233039. The next prime is 21342233069. The reversal of 21342233043 is 34033224312.

21342233043 is a `hidden beast` number, since 2 + 134 + 223 + 304 + 3 = 666.

It is not a de Polignac number, because 21342233043 - 2² = 21342233039 is a prime.

It is a super-2 number, since 2×21342233043² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21342232998 and 21342233016.

It is not an unprimeable number, because it can be changed into a prime (21342233083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 693538 + ... + 723656.

It is an arithmetic number, because the mean of its divisors is an integer number (1315119520).

Almost surely, 2^21342233043 is an apocalyptic number.

21342233043 is a deficient number, since it is larger than the sum of its proper divisors (10220635437).

21342233043 is a wasteful number, since it uses less digits than its factorization.

21342233043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31999 (or 31996 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 21342233043 its reverse (34033224312), we get a palindrome (55375457355).

The spelling of 21342233043 in words is "twenty-one billion, three hundred forty-two million, two hundred thirty-three thousand, forty-three".