21040142033033 has 8 divisors (see below), whose sum is σ = 21127811603976. Its totient is φ = 20952475488000.

The previous prime is 21040142032997. The next prime is 21040142033137. The reversal of 21040142033033 is 33033024104012.

It can be written as a sum of positive squares in 4 ways, for example, as 4611614516089 + 16428527516944 = 2147467^2 + 4053212^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21040142033033 - 2³⁶ = 20971422556297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21040142032993 and 21040142033011.

It is not an unprimeable number, because it can be changed into a prime (21040142003033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13758035 + ... + 15210647.

It is an arithmetic number, because the mean of its divisors is an integer number (2640976450497).

Almost surely, 2^{21040142033033} is an apocalyptic number.

It is an amenable number.

21040142033033 is a deficient number, since it is larger than the sum of its proper divisors (87669570943).

21040142033033 is a wasteful number, since it uses less digits than its factorization.

21040142033033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512955.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21040142033033 its reverse (33033024104012), we get a palindrome (54073166137045).

The spelling of 21040142033033 in words is "twenty-one trillion, forty billion, one hundred forty-two million, thirty-three thousand, thirty-three".