21123442114 has 8 divisors (see below), whose sum is σ = 31721049360. Its totient is φ = 10549758996.

The previous prime is 21123442103. The next prime is 21123442141. The reversal of 21123442114 is 41124432112.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5978824 + ... + 5982355.

It is an arithmetic number, because the mean of its divisors is an integer number (3965131170).

Almost surely, 2^21123442114 is an apocalyptic number.

21123442114 is a deficient number, since it is larger than the sum of its proper divisors (10597607246).

21123442114 is a wasteful number, since it uses less digits than its factorization.

21123442114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11962064.

The product of its digits is 1536, while the sum is 25.

Adding to 21123442114 its reverse (41124432112), we get a palindrome (62247874226).

The spelling of 21123442114 in words is "twenty-one billion, one hundred twenty-three million, four hundred forty-two thousand, one hundred fourteen".