221242331442 has 16 divisors (see below), whose sum is σ = 482710541472. Its totient is φ = 67043130720.

The previous prime is 221242331441. The next prime is 221242331459. The reversal of 221242331442 is 244133242122.

It is a super-3 number, since 3×221242331442³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (221242331441) 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, 1676078203 + ... + 1676078334.

It is an arithmetic number, because the mean of its divisors is an integer number (30169408842).

Almost surely, 2^221242331442 is an apocalyptic number.

221242331442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221242331442 is an abundant number, since it is smaller than the sum of its proper divisors (261468210030).

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

221242331442 is a wasteful number, since it uses less digits than its factorization.

221242331442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352156553.

The product of its digits is 18432, while the sum is 30.

Adding to 221242331442 its reverse (244133242122), we get a palindrome (465375573564).

The spelling of 221242331442 in words is "two hundred twenty-one billion, two hundred forty-two million, three hundred thirty-one thousand, four hundred forty-two".