21404130033 has 48 divisors (see below), whose sum is σ = 33956133120. Its totient is φ = 11887761600.

The previous prime is 21404130023. The next prime is 21404130067. The reversal of 21404130033 is 33003140412.

It is not a de Polignac number, because 21404130033 - 2¹⁰ = 21404129009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21404129991 and 21404130009.

It is not an unprimeable number, because it can be changed into a prime (21404130023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 761398 + ... + 789008.

It is an arithmetic number, because the mean of its divisors is an integer number (707419440).

Almost surely, 2^21404130033 is an apocalyptic number.

It is an amenable number.

21404130033 is a deficient number, since it is larger than the sum of its proper divisors (12552003087).

21404130033 is a wasteful number, since it uses less digits than its factorization.

21404130033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27790 (or 27777 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21404130033 its reverse (33003140412), we get a palindrome (54407270445).

The spelling of 21404130033 in words is "twenty-one billion, four hundred four million, one hundred thirty thousand, thirty-three".