222420331 has 8 divisors (see below), whose sum is σ = 255260160. Its totient is φ = 189846888.

The previous prime is 222420323. The next prime is 222420349. The reversal of 222420331 is 133024222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222420331 - 2³ = 222420323 is a prime.

It is a super-2 number, since 2×222420331² = 98941607284299122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222420299 and 222420308.

It is not an unprimeable number, because it can be changed into a prime (222420301) 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, 64801 + ... + 68146.

It is an arithmetic number, because the mean of its divisors is an integer number (31907520).

Almost surely, 2^222420331 is an apocalyptic number.

222420331 is a deficient number, since it is larger than the sum of its proper divisors (32839829).

222420331 is a wasteful number, since it uses less digits than its factorization.

222420331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133193.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 222420331 is about 14913.7631401333. The cubic root of 222420331 is about 605.8868045862.

Adding to 222420331 its reverse (133024222), we get a palindrome (355444553).

The spelling of 222420331 in words is "two hundred twenty-two million, four hundred twenty thousand, three hundred thirty-one".