221340122 has 16 divisors (see below), whose sum is σ = 344079360. Its totient is φ = 106660848.

The previous prime is 221340079. The next prime is 221340127. The reversal of 221340122 is 221043122.

221340122 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221340122.

It is not an unprimeable number, because it can be changed into a prime (221340127) 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, 32063 + ... + 38349.

It is an arithmetic number, because the mean of its divisors is an integer number (21504960).

Almost surely, 2^221340122 is an apocalyptic number.

221340122 is a deficient number, since it is larger than the sum of its proper divisors (122739238).

221340122 is a wasteful number, since it uses less digits than its factorization.

221340122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6925.

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

The square root of 221340122 is about 14877.5038901020. The cubic root of 221340122 is about 604.9043602661.

Adding to 221340122 its reverse (221043122), we get a palindrome (442383244).

The spelling of 221340122 in words is "two hundred twenty-one million, three hundred forty thousand, one hundred twenty-two".