21403442220030 has 96 divisors (see below), whose sum is σ = 59931661660416. Its totient is φ = 5268361738752.

The previous prime is 21403442220007. The next prime is 21403442220037. The reversal of 21403442220030 is 3002224430412.

21403442220030 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 3 + 4 + 422 + 200 + 30 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21403442219976 and 21403442220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403442220037) 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, 36202579 + ... + 36789041.

It is an arithmetic number, because the mean of its divisors is an integer number (624288142296).

Almost surely, 2^{21403442220030} is an apocalyptic number.

21403442220030 is an abundant number, since it is smaller than the sum of its proper divisors (38528219440386).

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

21403442220030 is a wasteful number, since it uses less digits than its factorization.

21403442220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617682 (or 617679 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 21403442220030 its reverse (3002224430412), we get a palindrome (24405666650442).

The spelling of 21403442220030 in words is "twenty-one trillion, four hundred three billion, four hundred forty-two million, two hundred twenty thousand, thirty".