223442021420 has 24 divisors (see below), whose sum is σ = 472653274464. Its totient is φ = 88724422016.

The previous prime is 223442021419. The next prime is 223442021443. The reversal of 223442021420 is 24120244322.

It is a self number, because there is not a number n which added to its sum of digits gives 223442021420.

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, 40771352 + ... + 40776831.

It is an arithmetic number, because the mean of its divisors is an integer number (19693886436).

Almost surely, 2^223442021420 is an apocalyptic number.

223442021420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223442021420 is an abundant number, since it is smaller than the sum of its proper divisors (249211253044).

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

223442021420 is a wasteful number, since it uses less digits than its factorization.

223442021420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81548329 (or 81548327 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 223442021420 its reverse (24120244322), we get a palindrome (247562265742).

The spelling of 223442021420 in words is "two hundred twenty-three billion, four hundred forty-two million, twenty-one thousand, four hundred twenty".