21403404222 has 16 divisors (see below), whose sum is σ = 42808373760. Its totient is φ = 7134207192.

The previous prime is 21403404181. The next prime is 21403404227. The reversal of 21403404222 is 22240430412.

It is a super-3 number, since 3×21403404222³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21403404192 and 21403404201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403404227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188403 + ... + 279825.

It is an arithmetic number, because the mean of its divisors is an integer number (2675523360).

Almost surely, 2^21403404222 is an apocalyptic number.

21403404222 is an abundant number, since it is smaller than the sum of its proper divisors (21404969538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21403404222 is a wasteful number, since it uses less digits than its factorization.

21403404222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130447.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21403404222 its reverse (22240430412), we get a palindrome (43643834634).

The spelling of 21403404222 in words is "twenty-one billion, four hundred three million, four hundred four thousand, two hundred twenty-two".