21110122010111 has 8 divisors (see below), whose sum is σ = 21319778205984. Its totient is φ = 20900478463200.

The previous prime is 21110122010101. The next prime is 21110122010113. The reversal of 21110122010111 is 11101022101112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21110122010111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110122010113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209945 + ... + 6501101.

It is an arithmetic number, because the mean of its divisors is an integer number (2664972275748).

Almost surely, 2^{21110122010111} is an apocalyptic number.

21110122010111 is a deficient number, since it is larger than the sum of its proper divisors (209656195873).

21110122010111 is a wasteful number, since it uses less digits than its factorization.

21110122010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324481.

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

Adding to 21110122010111 its reverse (11101022101112), we get a palindrome (32211144111223).

The spelling of 21110122010111 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-two million, ten thousand, one hundred eleven".