21113353432202 has 4 divisors (see below), whose sum is σ = 31670030148306. Its totient is φ = 10556676716100.

The previous prime is 21113353432163. The next prime is 21113353432207. The reversal of 21113353432202 is 20223435331112.

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., 20852200749241 + 261152682961 = 4566421^2 + 511031^2 .

It is not an unprimeable number, because it can be changed into a prime (21113353432207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278338358049 + ... + 5278338358052.

Almost surely, 2^{21113353432202} is an apocalyptic number.

21113353432202 is a deficient number, since it is larger than the sum of its proper divisors (10556676716104).

21113353432202 is a wasteful number, since it uses less digits than its factorization.

21113353432202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556676716103.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 21113353432202 its reverse (20223435331112), we get a palindrome (41336788763314).

The spelling of 21113353432202 in words is "twenty-one trillion, one hundred thirteen billion, three hundred fifty-three million, four hundred thirty-two thousand, two hundred two".