1222144197 has 4 divisors (see below), whose sum is σ = 1629525600. Its totient is φ = 814762796.

The previous prime is 1222144193. The next prime is 1222144199. The reversal of 1222144197 is 7914412221.

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 1222144197 - 2² = 1222144193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222144193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203690697 + ... + 203690702.

It is an arithmetic number, because the mean of its divisors is an integer number (407381400).

Almost surely, 2^1222144197 is an apocalyptic number.

It is an amenable number.

1222144197 is a deficient number, since it is larger than the sum of its proper divisors (407381403).

1222144197 is an equidigital number, since it uses as much as digits as its factorization.

1222144197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407381402.

The product of its digits is 8064, while the sum is 33.

The square root of 1222144197 is about 34959.1790092388. The cubic root of 1222144197 is about 1069.1553578255.

The spelling of 1222144197 in words is "one billion, two hundred twenty-two million, one hundred forty-four thousand, one hundred ninety-seven".