21100313013111 has 6 divisors (see below), whose sum is σ = 30478229907840. Its totient is φ = 14066875342068.

The previous prime is 21100313013061. The next prime is 21100313013113. The reversal of 21100313013111 is 11131031300112.

21100313013111 is a `hidden beast` number, since 21 + 1 + 0 + 0 + 31 + 301 + 311 + 1 = 666.

It is not a de Polignac number, because 21100313013111 - 2⁹ = 21100313012599 is a prime.

It is a super-2 number, since 2×21100313013111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100313013113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172239611831 + ... + 1172239611848.

It is an arithmetic number, because the mean of its divisors is an integer number (5079704984640).

Almost surely, 2^{21100313013111} is an apocalyptic number.

21100313013111 is a deficient number, since it is larger than the sum of its proper divisors (9377916894729).

21100313013111 is a wasteful number, since it uses less digits than its factorization.

21100313013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344479223685 (or 2344479223682 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 21100313013111 its reverse (11131031300112), we get a palindrome (32231344313223).

The spelling of 21100313013111 in words is "twenty-one trillion, one hundred billion, three hundred thirteen million, thirteen thousand, one hundred eleven".