221134355 has 16 divisors (see below), whose sum is σ = 286814304. Its totient is φ = 162704640.

The previous prime is 221134321. The next prime is 221134387. The reversal of 221134355 is 553431122.

It is a happy number.

It is not a de Polignac number, because 221134355 - 2¹⁴ = 221117971 is a prime.

It is a super-2 number, since 2×221134355² = 97800805922532050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12212 + ... + 24318.

It is an arithmetic number, because the mean of its divisors is an integer number (17925894).

Almost surely, 2^221134355 is an apocalyptic number.

221134355 is a deficient number, since it is larger than the sum of its proper divisors (65679949).

221134355 is a wasteful number, since it uses less digits than its factorization.

221134355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12406.

The product of its digits is 3600, while the sum is 26.

The square root of 221134355 is about 14870.5869083907. The cubic root of 221134355 is about 604.7168540502.

Adding to 221134355 its reverse (553431122), we get a palindrome (774565477).

The spelling of 221134355 in words is "two hundred twenty-one million, one hundred thirty-four thousand, three hundred fifty-five".