221497323794122 has 8 divisors (see below), whose sum is σ = 332246067603876. Its totient is φ = 110748634592832.

The previous prime is 221497323794111. The next prime is 221497323794129.

221497323794122 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 201669281462961 + 19828042331161 = 14201031^2 + 4452869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221497323794122² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221497323794129) 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, 1263433 + ... + 21085324.

Almost surely, 2^{221497323794122} is an apocalyptic number.

221497323794122 is a deficient number, since it is larger than the sum of its proper divisors (110748743809754).

221497323794122 is a wasteful number, since it uses less digits than its factorization.

221497323794122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27304232.

The product of its digits is 18289152, while the sum is 58.

The spelling of 221497323794122 in words is "two hundred twenty-one trillion, four hundred ninety-seven billion, three hundred twenty-three million, seven hundred ninety-four thousand, one hundred twenty-two".