21112211134 has 8 divisors (see below), whose sum is σ = 36192361968. Its totient is φ = 9048090480.

The previous prime is 21112211123. The next prime is 21112211173. The reversal of 21112211134 is 43111221112.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754007527 + ... + 754007554.

It is an arithmetic number, because the mean of its divisors is an integer number (4524045246).

Almost surely, 2^21112211134 is an apocalyptic number.

21112211134 is a deficient number, since it is larger than the sum of its proper divisors (15080150834).

21112211134 is a wasteful number, since it uses less digits than its factorization.

21112211134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508015090.

The product of its digits is 96, while the sum is 19.

Adding to 21112211134 its reverse (43111221112), we get a palindrome (64223432246).

The spelling of 21112211134 in words is "twenty-one billion, one hundred twelve million, two hundred eleven thousand, one hundred thirty-four".