222513420 has 48 divisors (see below), whose sum is σ = 623766528. Its totient is φ = 59267520.

The previous prime is 222513413. The next prime is 222513479. The reversal of 222513420 is 24315222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68677 + ... + 71843.

It is an arithmetic number, because the mean of its divisors is an integer number (12995136).

Almost surely, 2^222513420 is an apocalyptic number.

222513420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222513420 is an abundant number, since it is smaller than the sum of its proper divisors (401253108).

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

222513420 is a wasteful number, since it uses less digits than its factorization.

222513420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350 (or 4348 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 222513420 is about 14916.8837228156. The cubic root of 222513420 is about 605.9713195371.

Adding to 222513420 its reverse (24315222), we get a palindrome (246828642).

The spelling of 222513420 in words is "two hundred twenty-two million, five hundred thirteen thousand, four hundred twenty".