21120011100010 has 16 divisors (see below), whose sum is σ = 38139850669536. Its totient is φ = 8420486509008.

The previous prime is 21120011099987. The next prime is 21120011100031. The reversal of 21120011100010 is 1000111002112.

It is a super-2 number, since 2×21120011100010² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 21120011100010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3439738152 + ... + 3439744291.

It is an arithmetic number, because the mean of its divisors is an integer number (2383740666846).

Almost surely, 2^{21120011100010} is an apocalyptic number.

21120011100010 is a deficient number, since it is larger than the sum of its proper divisors (17019839569526).

21120011100010 is a wasteful number, since it uses less digits than its factorization.

21120011100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879482757.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21120011100010 its reverse (1000111002112), we get a palindrome (22120122102122).

The spelling of 21120011100010 in words is "twenty-one trillion, one hundred twenty billion, eleven million, one hundred thousand, ten".