223021221042 has 16 divisors (see below), whose sum is σ = 446047076160. Its totient is φ = 74339634672.

The previous prime is 223021221037. The next prime is 223021221043. The reversal of 223021221042 is 240122120322.

It is not an unprimeable number, because it can be changed into a prime (223021221043) 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, 993184 + ... + 1196852.

It is an arithmetic number, because the mean of its divisors is an integer number (27877942260).

Almost surely, 2^223021221042 is an apocalyptic number.

223021221042 is an abundant number, since it is smaller than the sum of its proper divisors (223025855118).

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

223021221042 is a wasteful number, since it uses less digits than its factorization.

223021221042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386177.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 223021221042 its reverse (240122120322), we get a palindrome (463143341364).

The spelling of 223021221042 in words is "two hundred twenty-three billion, twenty-one million, two hundred twenty-one thousand, forty-two".