21113302243204 has 48 divisors (see below), whose sum is σ = 39285637372800. Its totient is φ = 9906270682880.

The previous prime is 21113302243199. The next prime is 21113302243237. The reversal of 21113302243204 is 40234220331112.

It is a super-2 number, since 2×21113302243204² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56859264 + ... + 57229384.

It is an arithmetic number, because the mean of its divisors is an integer number (818450778600).

Almost surely, 2^{21113302243204} is an apocalyptic number.

It is an amenable number.

21113302243204 is a deficient number, since it is larger than the sum of its proper divisors (18172335129596).

21113302243204 is a wasteful number, since it uses less digits than its factorization.

21113302243204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381900 (or 381898 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21113302243204 its reverse (40234220331112), we get a palindrome (61347522574316).

It can be divided in two parts, 2111330 and 2243204, that added together give a palindrome (4354534).

The spelling of 21113302243204 in words is "twenty-one trillion, one hundred thirteen billion, three hundred two million, two hundred forty-three thousand, two hundred four".