21343133043 has 16 divisors (see below), whose sum is σ = 31713296160. Its totient is φ = 14186527488.

The previous prime is 21343132981. The next prime is 21343133057. The reversal of 21343133043 is 34033134312.

21343133043 is a `hidden beast` number, since 2 + 1 + 343 + 13 + 304 + 3 = 666.

It is not a de Polignac number, because 21343133043 - 2¹³ = 21343124851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21343132998 and 21343133016.

It is not an unprimeable number, because it can be changed into a prime (21343133743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1163730 + ... + 1181927.

It is an arithmetic number, because the mean of its divisors is an integer number (1982081010).

Almost surely, 2^21343133043 is an apocalyptic number.

21343133043 is a deficient number, since it is larger than the sum of its proper divisors (10370163117).

21343133043 is a wasteful number, since it uses less digits than its factorization.

21343133043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346003 (or 2345997 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 21343133043 its reverse (34033134312), we get a palindrome (55376267355).

The spelling of 21343133043 in words is "twenty-one billion, three hundred forty-three million, one hundred thirty-three thousand, forty-three".