21111101001110 has 64 divisors (see below), whose sum is σ = 39681222579072. Its totient is φ = 8071372210176.

The previous prime is 21111101001047. The next prime is 21111101001157. The reversal of 21111101001110 is 1110010111112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21111101001091 and 21111101001100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3331399862 + ... + 3331406198.

It is an arithmetic number, because the mean of its divisors is an integer number (620019102798).

Almost surely, 2^{21111101001110} is an apocalyptic number.

21111101001110 is a deficient number, since it is larger than the sum of its proper divisors (18570121577962).

21111101001110 is a wasteful number, since it uses less digits than its factorization.

21111101001110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14697.

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

Adding to 21111101001110 its reverse (1110010111112), we get a palindrome (22221111112222).

The spelling of 21111101001110 in words is "twenty-one trillion, one hundred eleven billion, one hundred one million, one thousand, one hundred ten".