21111210110002 has 16 divisors (see below), whose sum is σ = 32689723502592. Its totient is φ = 10214664737760.

The previous prime is 21111210109961. The next prime is 21111210110041. The reversal of 21111210110002 is 20001101211112.

It is a happy number.

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, 5818578 + ... + 8722285.

It is an arithmetic number, because the mean of its divisors is an integer number (2043107718912).

Almost surely, 2^{21111210110002} is an apocalyptic number.

21111210110002 is a deficient number, since it is larger than the sum of its proper divisors (11578513392590).

21111210110002 is a wasteful number, since it uses less digits than its factorization.

21111210110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14564313.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21111210110002 its reverse (20001101211112), we get a palindrome (41112311321114).

The spelling of 21111210110002 in words is "twenty-one trillion, one hundred eleven billion, two hundred ten million, one hundred ten thousand, two".