221223144342 has 16 divisors (see below), whose sum is σ = 442463429232. Its totient is φ = 73738191360.

The previous prime is 221223144319. The next prime is 221223144413. The reversal of 221223144342 is 243441322122.

It is a super-2 number, since 2×221223144342² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 543259 + ... + 858822.

It is an arithmetic number, because the mean of its divisors is an integer number (27653964327).

Almost surely, 2^221223144342 is an apocalyptic number.

221223144342 is an abundant number, since it is smaller than the sum of its proper divisors (221240284890).

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

221223144342 is a wasteful number, since it uses less digits than its factorization.

221223144342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428383.

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

Adding to 221223144342 its reverse (243441322122), we get a palindrome (464664466464).

The spelling of 221223144342 in words is "two hundred twenty-one billion, two hundred twenty-three million, one hundred forty-four thousand, three hundred forty-two".