21111012201110 has 32 divisors (see below), whose sum is σ = 40923088496640. Its totient is φ = 7794796549248.

The previous prime is 21111012201107. The next prime is 21111012201127. The reversal of 21111012201110 is 1110221011112.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 49875524 + ... + 50297016.

It is an arithmetic number, because the mean of its divisors is an integer number (1278846515520).

Almost surely, 2^{21111012201110} is an apocalyptic number.

21111012201110 is a deficient number, since it is larger than the sum of its proper divisors (19812076295530).

21111012201110 is a wasteful number, since it uses less digits than its factorization.

21111012201110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806792.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21111012201110 its reverse (1110221011112), we get a palindrome (22221233212222).

The spelling of 21111012201110 in words is "twenty-one trillion, one hundred eleven billion, twelve million, two hundred one thousand, one hundred ten".