221226622 has 4 divisors (see below), whose sum is σ = 331839936. Its totient is φ = 110613310.

The previous prime is 221226583. The next prime is 221226667. The reversal of 221226622 is 226622122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 226622122 = 2 ⋅113311061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55306654 + ... + 55306657.

It is an arithmetic number, because the mean of its divisors is an integer number (82959984).

Almost surely, 2^221226622 is an apocalyptic number.

221226622 is a deficient number, since it is larger than the sum of its proper divisors (110613314).

221226622 is a wasteful number, since it uses less digits than its factorization.

221226622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110613313.

The product of its digits is 2304, while the sum is 25.

The square root of 221226622 is about 14873.6889170105. The cubic root of 221226622 is about 604.8009471975.

Adding to 221226622 its reverse (226622122), we get a palindrome (447848744).

The spelling of 221226622 in words is "two hundred twenty-one million, two hundred twenty-six thousand, six hundred twenty-two".