222442001421 has 16 divisors (see below), whose sum is σ = 330563966400. Its totient is φ = 132225585408.

The previous prime is 222442001413. The next prime is 222442001503. The reversal of 222442001421 is 124100244222.

It is a happy number.

It is not a de Polignac number, because 222442001421 - 2³ = 222442001413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222442001391 and 222442001400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222442001401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114778186 + ... + 114780123.

It is an arithmetic number, because the mean of its divisors is an integer number (20660247900).

Almost surely, 2^222442001421 is an apocalyptic number.

It is an amenable number.

222442001421 is a deficient number, since it is larger than the sum of its proper divisors (108121964979).

222442001421 is a wasteful number, since it uses less digits than its factorization.

222442001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229558348.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 222442001421 its reverse (124100244222), we get a palindrome (346542245643).

The spelling of 222442001421 in words is "two hundred twenty-two billion, four hundred forty-two million, one thousand, four hundred twenty-one".