221254933242 has 32 divisors (see below), whose sum is σ = 507183017472. Its totient is φ = 63033513264.

The previous prime is 221254933231. The next prime is 221254933247. The reversal of 221254933242 is 242339452122.

It is a self number, because there is not a number n which added to its sum of digits gives 221254933242.

It is not an unprimeable number, because it can be changed into a prime (221254933247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7576168 + ... + 7605315.

It is an arithmetic number, because the mean of its divisors is an integer number (15849469296).

Almost surely, 2^221254933242 is an apocalyptic number.

221254933242 is an abundant number, since it is smaller than the sum of its proper divisors (285928084230).

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

221254933242 is a wasteful number, since it uses less digits than its factorization.

221254933242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15181842.

The product of its digits is 207360, while the sum is 39.

The spelling of 221254933242 in words is "two hundred twenty-one billion, two hundred fifty-four million, nine hundred thirty-three thousand, two hundred forty-two".