21100011210002 has 4 divisors (see below), whose sum is σ = 31650016815006. Its totient is φ = 10550005605000.

The previous prime is 21100011209987. The next prime is 21100011210013. The reversal of 21100011210002 is 20001211000112.

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., 13305635040721 + 7794376169281 = 3647689^2 + 2791841^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275002802499 + ... + 5275002802502.

Almost surely, 2^{21100011210002} is an apocalyptic number.

21100011210002 is a deficient number, since it is larger than the sum of its proper divisors (10550005605004).

21100011210002 is a wasteful number, since it uses less digits than its factorization.

21100011210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10550005605003.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21100011210002 its reverse (20001211000112), we get a palindrome (41101222210114).

The spelling of 21100011210002 in words is "twenty-one trillion, one hundred billion, eleven million, two hundred ten thousand, two".