221540470122 has 32 divisors (see below), whose sum is σ = 444099240000. Its totient is φ = 73677195648.

The previous prime is 221540470111. The next prime is 221540470147. The reversal of 221540470122 is 221074045122.

It is a self number, because there is not a number n which added to its sum of digits gives 221540470122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12652878 + ... + 12670374.

It is an arithmetic number, because the mean of its divisors is an integer number (13878101250).

Almost surely, 2^221540470122 is an apocalyptic number.

221540470122 is an abundant number, since it is smaller than the sum of its proper divisors (222558769878).

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

221540470122 is a wasteful number, since it uses less digits than its factorization.

221540470122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22230.

The product of its (nonzero) digits is 8960, while the sum is 30.

The spelling of 221540470122 in words is "two hundred twenty-one billion, five hundred forty million, four hundred seventy thousand, one hundred twenty-two".