221321040122 has 64 divisors (see below), whose sum is σ = 412621440000. Its totient is φ = 86693379840.

The previous prime is 221321040103. The next prime is 221321040133. The reversal of 221321040122 is 221040123122.

221321040122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221321040094 and 221321040103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39653372 + ... + 39658952.

It is an arithmetic number, because the mean of its divisors is an integer number (6447210000).

Almost surely, 2^221321040122 is an apocalyptic number.

221321040122 is a deficient number, since it is larger than the sum of its proper divisors (191300399878).

221321040122 is a wasteful number, since it uses less digits than its factorization.

221321040122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7711.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 221321040122 its reverse (221040123122), we get a palindrome (442361163244).

The spelling of 221321040122 in words is "two hundred twenty-one billion, three hundred twenty-one million, forty thousand, one hundred twenty-two".