21113432204002 has 4 divisors (see below), whose sum is σ = 31670148306006. Its totient is φ = 10556716102000.

The previous prime is 21113432203987. The next prime is 21113432204009. The reversal of 21113432204002 is 20040223431112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21007546393201 + 105885810801 = 4583399^2 + 325401^2 .

It is not an unprimeable number, because it can be changed into a prime (21113432204009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278358050999 + ... + 5278358051002.

Almost surely, 2^{21113432204002} is an apocalyptic number.

21113432204002 is a deficient number, since it is larger than the sum of its proper divisors (10556716102004).

21113432204002 is a wasteful number, since it uses less digits than its factorization.

21113432204002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556716102003.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21113432204002 its reverse (20040223431112), we get a palindrome (41153655635114).

The spelling of 21113432204002 in words is "twenty-one trillion, one hundred thirteen billion, four hundred thirty-two million, two hundred four thousand, two".