226154221 has 4 divisors (see below), whose sum is σ = 226228032. Its totient is φ = 226080412.

The previous prime is 226154191. The next prime is 226154273. The reversal of 226154221 is 122451622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 226154221 - 2²¹ = 224057069 is a prime.

It is a super-2 number, since 2×226154221² = 102291463352233682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226154921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32101 + ... + 38506.

It is an arithmetic number, because the mean of its divisors is an integer number (56557008).

Almost surely, 2^226154221 is an apocalyptic number.

It is an amenable number.

226154221 is a deficient number, since it is larger than the sum of its proper divisors (73811).

226154221 is an equidigital number, since it uses as much as digits as its factorization.

226154221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73810.

The product of its digits is 1920, while the sum is 25.

The square root of 226154221 is about 15038.4248177793. The cubic root of 226154221 is about 609.2584566114.

The spelling of 226154221 in words is "two hundred twenty-six million, one hundred fifty-four thousand, two hundred twenty-one".