221340192 has 24 divisors (see below), whose sum is σ = 581018256. Its totient is φ = 73780032.

The previous prime is 221340191. The next prime is 221340193. The reversal of 221340192 is 291043122.

It is an interprime number because it is at equal distance from previous prime (221340191) and next prime (221340193).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (221340191) 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, 1152718 + ... + 1152909.

It is an arithmetic number, because the mean of its divisors is an integer number (24209094).

Almost surely, 2^221340192 is an apocalyptic number.

It is an amenable number.

221340192 is an abundant number, since it is smaller than the sum of its proper divisors (359678064).

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

221340192 is a wasteful number, since it uses less digits than its factorization.

221340192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305640 (or 2305632 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 221340192 is about 14877.5062426470. The cubic root of 221340192 is about 604.9044240341.

The spelling of 221340192 in words is "two hundred twenty-one million, three hundred forty thousand, one hundred ninety-two".