1197679221 has 12 divisors (see below), whose sum is σ = 1730296620. Its totient is φ = 798307200.

The previous prime is 1197679211. The next prime is 1197679229. The reversal of 1197679221 is 1229767911.

It can be written as a sum of positive squares in 2 ways, for example, as 1081686321 + 115992900 = 32889^2 + 10770^2 .

It is not a de Polignac number, because 1197679221 - 2⁶ = 1197679157 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197679229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67371 + ... + 83271.

It is an arithmetic number, because the mean of its divisors is an integer number (144191385).

Almost surely, 2^1197679221 is an apocalyptic number.

It is an amenable number.

1197679221 is a deficient number, since it is larger than the sum of its proper divisors (532617399).

1197679221 is a wasteful number, since it uses less digits than its factorization.

1197679221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24276 (or 24273 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 1197679221 is about 34607.5023802643. The cubic root of 1197679221 is about 1061.9730727210.

The spelling of 1197679221 in words is "one billion, one hundred ninety-seven million, six hundred seventy-nine thousand, two hundred twenty-one".