21404341330 has 16 divisors (see below), whose sum is σ = 38546746560. Its totient is φ = 8557529392.

The previous prime is 21404341303. The next prime is 21404341331. The reversal of 21404341330 is 3314340412.

It is a super-2 number, since 2×21404341330² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21404341295 and 21404341304.

It is not an unprimeable number, because it can be changed into a prime (21404341331) 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, 504484 + ... + 545263.

It is an arithmetic number, because the mean of its divisors is an integer number (2409171660).

Almost surely, 2^21404341330 is an apocalyptic number.

21404341330 is a deficient number, since it is larger than the sum of its proper divisors (17142405230).

21404341330 is a wasteful number, since it uses less digits than its factorization.

21404341330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051793.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21404341330 its reverse (3314340412), we get a palindrome (24718681742).

The spelling of 21404341330 in words is "twenty-one billion, four hundred four million, three hundred forty-one thousand, three hundred thirty".