21156023114 has 8 divisors (see below), whose sum is σ = 31762808640. Its totient is φ = 10568420236.

The previous prime is 21156023089. The next prime is 21156023137. The reversal of 21156023114 is 41132065112.

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, 4792904 + ... + 4797315.

It is an arithmetic number, because the mean of its divisors is an integer number (3970351080).

Almost surely, 2^21156023114 is an apocalyptic number.

21156023114 is a deficient number, since it is larger than the sum of its proper divisors (10606785526).

21156023114 is a wasteful number, since it uses less digits than its factorization.

21156023114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591324.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 21156023114 its reverse (41132065112), we get a palindrome (62288088226).

The spelling of 21156023114 in words is "twenty-one billion, one hundred fifty-six million, twenty-three thousand, one hundred fourteen".