222311466 has 112 divisors (see below), whose sum is σ = 554728104. Its totient is φ = 66344832.

The previous prime is 222311461. The next prime is 222311473. The reversal of 222311466 is 664113222.

It can be written as a sum of positive squares in 4 ways, for example, as 144360225 + 77951241 = 12015^2 + 8829^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222311461) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 701140 + ... + 701456.

Almost surely, 2^222311466 is an apocalyptic number.

222311466 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 222311466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277364052).

222311466 is an abundant number, since it is smaller than the sum of its proper divisors (332416638).

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

222311466 is a wasteful number, since it uses less digits than its factorization.

222311466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 372 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 222311466 is about 14910.1128768363. The cubic root of 222311466 is about 605.7879367787.

Adding to 222311466 its reverse (664113222), we get a palindrome (886424688).

It can be divided in two parts, 2223 and 11466, that added together give a square (13689 = 117²).

The spelling of 222311466 in words is "two hundred twenty-two million, three hundred eleven thousand, four hundred sixty-six".