21997968114 has 8 divisors (see below), whose sum is σ = 43995936240. Its totient is φ = 7332656036.

The previous prime is 21997968073. The next prime is 21997968119. The reversal of 21997968114 is 41186979912.

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

21997968114 is an admirable number.

It is a super-2 number, since 2×21997968114² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21997968119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1833164004 + ... + 1833164015.

It is an arithmetic number, because the mean of its divisors is an integer number (5499492030).

Almost surely, 2^21997968114 is an apocalyptic number.

21997968114 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21997968114 is a wasteful number, since it uses less digits than its factorization.

21997968114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666328024.

The product of its digits is 1959552, while the sum is 57.

The spelling of 21997968114 in words is "twenty-one billion, nine hundred ninety-seven million, nine hundred sixty-eight thousand, one hundred fourteen".