221014340 has 24 divisors (see below), whose sum is σ = 465164952. Its totient is φ = 88208640.

The previous prime is 221014333. The next prime is 221014349. The reversal of 221014340 is 43410122.

It can be written as a sum of positive squares in 4 ways, for example, as 81396484 + 139617856 = 9022^2 + 11816^2 .

It is not an unprimeable number, because it can be changed into a prime (221014349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2951 + ... + 21230.

It is an arithmetic number, because the mean of its divisors is an integer number (19381873).

Almost surely, 2^221014340 is an apocalyptic number.

221014340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221014340 is an abundant number, since it is smaller than the sum of its proper divisors (244150612).

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

221014340 is a wasteful number, since it uses less digits than its factorization.

221014340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24647 (or 24645 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 221014340 is about 14866.5510458882. The cubic root of 221014340 is about 604.6074360652.

Adding to 221014340 its reverse (43410122), we get a palindrome (264424462).

The spelling of 221014340 in words is "two hundred twenty-one million, fourteen thousand, three hundred forty".