221014992 has 80 divisors (see below), whose sum is σ = 655672320. Its totient is φ = 63446400.

The previous prime is 221014961. The next prime is 221014993. The reversal of 221014992 is 299410122.

It is a happy number.

221014992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221014993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984 + ... + 21047.

It is an arithmetic number, because the mean of its divisors is an integer number (8195904).

Almost surely, 2^221014992 is an apocalyptic number.

221014992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221014992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327836160).

221014992 is an abundant number, since it is smaller than the sum of its proper divisors (434657328).

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

221014992 is a wasteful number, since it uses less digits than its factorization.

221014992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22072 (or 22066 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 221014992 is about 14866.5729742937. The cubic root of 221014992 is about 604.6080306023.

The spelling of 221014992 in words is "two hundred twenty-one million, fourteen thousand, nine hundred ninety-two".