226622221177 has 4 divisors (see below), whose sum is σ = 247224241296. Its totient is φ = 206020201060.

The previous prime is 226622221123. The next prime is 226622221183. The reversal of 226622221177 is 771122226622.

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 a de Polignac number, because none of the positive numbers 2^k-226622221177 is a prime.

It is a super-2 number, since 2×226622221177² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (226622221187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10301010043 + ... + 10301010064.

It is an arithmetic number, because the mean of its divisors is an integer number (61806060324).

Almost surely, 2^226622221177 is an apocalyptic number.

It is an amenable number.

226622221177 is a deficient number, since it is larger than the sum of its proper divisors (20602020119).

226622221177 is a wasteful number, since it uses less digits than its factorization.

226622221177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20602020118.

The product of its digits is 112896, while the sum is 40.

Adding to 226622221177 its reverse (771122226622), we get a palindrome (997744447799).

Subtracting 226622221177 from its reverse (771122226622), we obtain a palindrome (544500005445).

The spelling of 226622221177 in words is "two hundred twenty-six billion, six hundred twenty-two million, two hundred twenty-one thousand, one hundred seventy-seven".