1226996221 has 8 divisors (see below), whose sum is σ = 1354669344. Its totient is φ = 1102011120.

The previous prime is 1226996209. The next prime is 1226996297.

1226996221 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 1226996221 - 2⁵ = 1226996189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226996201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671046 + ... + 672871.

It is an arithmetic number, because the mean of its divisors is an integer number (169333668).

Almost surely, 2^1226996221 is an apocalyptic number.

1226996221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1226996221 is a deficient number, since it is larger than the sum of its proper divisors (127673123).

1226996221 is a wasteful number, since it uses less digits than its factorization.

1226996221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344011.

The product of its digits is 46656, while the sum is 40.

The square root of 1226996221 is about 35028.5058345343. The cubic root of 1226996221 is about 1070.5683709902.

The spelling of 1226996221 in words is "one billion, two hundred twenty-six million, nine hundred ninety-six thousand, two hundred twenty-one".