221242202242122 has 16 divisors (see below), whose sum is σ = 443444240508192. Its totient is φ = 73587428076720.

The previous prime is 221242202242109. The next prime is 221242202242177.

221242202242122 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×221242202242122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221242202242122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39993164668 + ... + 39993170199.

It is an arithmetic number, because the mean of its divisors is an integer number (27715265031762).

Almost surely, 2^{221242202242122} is an apocalyptic number.

221242202242122 is an abundant number, since it is smaller than the sum of its proper divisors (222202038266070).

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

221242202242122 is a wasteful number, since it uses less digits than its factorization.

221242202242122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79986335333.

The product of its (nonzero) digits is 16384, while the sum is 30.

It can be divided in two parts, 22124220 and 2242122, that added together give a palindrome (24366342).

The spelling of 221242202242122 in words is "two hundred twenty-one trillion, two hundred forty-two billion, two hundred two million, two hundred forty-two thousand, one hundred twenty-two".