21440133120043 has 16 divisors (see below), whose sum is σ = 25010272320480. Its totient is φ = 18162870208000.

The previous prime is 21440133120023. The next prime is 21440133120083. The reversal of 21440133120043 is 34002133104412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21440133120043 - 2¹⁷ = 21440132988971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21440133119993 and 21440133120020.

It is not an unprimeable number, because it can be changed into a prime (21440133120023) 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, 567570808 + ... + 567608581.

It is an arithmetic number, because the mean of its divisors is an integer number (1563142020030).

Almost surely, 2^{21440133120043} is an apocalyptic number.

21440133120043 is a deficient number, since it is larger than the sum of its proper divisors (3570139200437).

21440133120043 is a wasteful number, since it uses less digits than its factorization.

21440133120043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135179518.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21440133120043 its reverse (34002133104412), we get a palindrome (55442266224455).

The spelling of 21440133120043 in words is "twenty-one trillion, four hundred forty billion, one hundred thirty-three million, one hundred twenty thousand, forty-three".