21111000334 has 16 divisors (see below), whose sum is σ = 31886985600. Its totient is φ = 10482040800.

The previous prime is 21111000329. The next prime is 21111000359. The reversal of 21111000334 is 43300011112.

21111000334 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×21111000334² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 1821859 + ... + 1833409.

It is an arithmetic number, because the mean of its divisors is an integer number (1992936600).

Almost surely, 2^21111000334 is an apocalyptic number.

21111000334 is a deficient number, since it is larger than the sum of its proper divisors (10775985266).

21111000334 is a wasteful number, since it uses less digits than its factorization.

21111000334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17835.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21111000334 its reverse (43300011112), we get a palindrome (64411011446).

The spelling of 21111000334 in words is "twenty-one billion, one hundred eleven million, three hundred thirty-four", and thus it is an aban number.