21111001101110 has 16 divisors (see below), whose sum is σ = 37999868634000. Its totient is φ = 8444385628896.

The previous prime is 21111001101053. The next prime is 21111001101137. The reversal of 21111001101110 is 1110110011112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21111001101091 and 21111001101100.

It is a congruent 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, 5540021 + ... + 8538959.

It is an arithmetic number, because the mean of its divisors is an integer number (2374991789625).

Almost surely, 2^{21111001101110} is an apocalyptic number.

21111001101110 is a deficient number, since it is larger than the sum of its proper divisors (16888867532890).

21111001101110 is a wasteful number, since it uses less digits than its factorization.

21111001101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702895.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 21111001101110 its reverse (1110110011112), we get a palindrome (22221111112222).

The spelling of 21111001101110 in words is "twenty-one trillion, one hundred eleven billion, one million, one hundred one thousand, one hundred ten".