226121161 has 16 divisors (see below), whose sum is σ = 271807488. Its totient is φ = 184017600.

The previous prime is 226121117. The next prime is 226121167. The reversal of 226121161 is 161121622.

It is a cyclic number.

It is not a de Polignac number, because 226121161 - 2¹⁵ = 226088393 is a prime.

It is a super-2 number, since 2×226121161² = 102261558903975842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226121167) 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, 1671 + ... + 21331.

It is an arithmetic number, because the mean of its divisors is an integer number (16987968).

Almost surely, 2^226121161 is an apocalyptic number.

It is an amenable number.

226121161 is a deficient number, since it is larger than the sum of its proper divisors (45686327).

226121161 is a wasteful number, since it uses less digits than its factorization.

226121161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19752.

The product of its digits is 288, while the sum is 22.

The square root of 226121161 is about 15037.3255933361. The cubic root of 226121161 is about 609.2287673341.

Adding to 226121161 its reverse (161121622), we get a palindrome (387242783).

The spelling of 226121161 in words is "two hundred twenty-six million, one hundred twenty-one thousand, one hundred sixty-one".