21113200311002 has 4 divisors (see below), whose sum is σ = 31669800466506. Its totient is φ = 10556600155500.

The previous prime is 21113200310989. The next prime is 21113200311017. The reversal of 21113200311002 is 20011300231112.

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., 12352139022721 + 8761061288281 = 3514561^2 + 2959909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278300077749 + ... + 5278300077752.

Almost surely, 2^{21113200311002} is an apocalyptic number.

21113200311002 is a deficient number, since it is larger than the sum of its proper divisors (10556600155504).

21113200311002 is a wasteful number, since it uses less digits than its factorization.

21113200311002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556600155503.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21113200311002 its reverse (20011300231112), we get a palindrome (41124500542114).

The spelling of 21113200311002 in words is "twenty-one trillion, one hundred thirteen billion, two hundred million, three hundred eleven thousand, two".