21112323200430 has 128 divisors (see below), whose sum is σ = 63177190686720. Its totient is φ = 4386647591040.

The previous prime is 21112323200411. The next prime is 21112323200471. The reversal of 21112323200430 is 3400232321112.

It is a self number, because there is not a number n which added to its sum of digits gives 21112323200430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31124347 + ... + 31795433.

It is an arithmetic number, because the mean of its divisors is an integer number (493571802240).

Almost surely, 2^{21112323200430} is an apocalyptic number.

21112323200430 is an abundant number, since it is smaller than the sum of its proper divisors (42064867486290).

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

21112323200430 is a wasteful number, since it uses less digits than its factorization.

21112323200430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684734.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21112323200430 its reverse (3400232321112), we get a palindrome (24512555521542).

The spelling of 21112323200430 in words is "twenty-one trillion, one hundred twelve billion, three hundred twenty-three million, two hundred thousand, four hundred thirty".