21111121314 has 16 divisors (see below), whose sum is σ = 46913603040. Its totient is φ = 7037040420.

The previous prime is 21111121301. The next prime is 21111121333. The reversal of 21111121314 is 41312111112.

It is a super-3 number, since 3×21111121314³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195473292 + ... + 195473399.

It is an arithmetic number, because the mean of its divisors is an integer number (2932100190).

Almost surely, 2^21111121314 is an apocalyptic number.

21111121314 is an abundant number, since it is smaller than the sum of its proper divisors (25802481726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21111121314 is a wasteful number, since it uses less digits than its factorization.

21111121314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390946702 (or 390946696 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

Adding to 21111121314 its reverse (41312111112), we get a palindrome (62423232426).

The spelling of 21111121314 in words is "twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, three hundred fourteen".