21409111230 has 64 divisors (see below), whose sum is σ = 55756850688. Its totient is φ = 5229694080.

The previous prime is 21409111223. The next prime is 21409111249. The reversal of 21409111230 is 3211190412.

It is a super-2 number, since 2×21409111230² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21409111230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158434 + ... + 260613.

It is an arithmetic number, because the mean of its divisors is an integer number (871200792).

Almost surely, 2^21409111230 is an apocalyptic number.

21409111230 is an abundant number, since it is smaller than the sum of its proper divisors (34347739458).

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

21409111230 is a wasteful number, since it uses less digits than its factorization.

21409111230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419201.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 21409111230 in words is "twenty-one billion, four hundred nine million, one hundred eleven thousand, two hundred thirty".