21177114 has 24 divisors (see below), whose sum is σ = 49269888. Its totient is φ = 6050520.

The previous prime is 21177097. The next prime is 21177131. The reversal of 21177114 is 41177112.

It is an interprime number because it is at equal distance from previous prime (21177097) and next prime (21177131).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35722 + ... + 36309.

It is an arithmetic number, because the mean of its divisors is an integer number (2052912).

Almost surely, 2^21177114 is an apocalyptic number.

21177114 is an abundant number, since it is smaller than the sum of its proper divisors (28092774).

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

21177114 is a wasteful number, since it uses less digits than its factorization.

21177114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72050 (or 72043 counting only the distinct ones).

The product of its digits is 392, while the sum is 24.

The square root of 21177114 is about 4601.8598414119. The cubic root of 21177114 is about 276.6658728062.

The spelling of 21177114 in words is "twenty-one million, one hundred seventy-seven thousand, one hundred fourteen".