21116212114 has 8 divisors (see below), whose sum is σ = 31674949488. Its totient is φ = 10557895620.

The previous prime is 21116212109. The next prime is 21116212133. The reversal of 21116212114 is 41121261112.

It is a happy number.

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, 101209 + ... + 229075.

It is an arithmetic number, because the mean of its divisors is an integer number (3959368686).

Almost surely, 2^21116212114 is an apocalyptic number.

21116212114 is a deficient number, since it is larger than the sum of its proper divisors (10558737374).

21116212114 is a wasteful number, since it uses less digits than its factorization.

21116212114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210440.

The product of its digits is 192, while the sum is 22.

Adding to 21116212114 its reverse (41121261112), we get a palindrome (62237473226).

The spelling of 21116212114 in words is "twenty-one billion, one hundred sixteen million, two hundred twelve thousand, one hundred fourteen".