1197374221 has 2 divisors, whose sum is σ = 1197374222. Its totient is φ = 1197374220.

The previous prime is 1197374179. The next prime is 1197374231. The reversal of 1197374221 is 1224737911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1081488996 + 115885225 = 32886^2 + 10765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197374221 - 2¹³ = 1197366029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197374231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598687110 + 598687111.

It is an arithmetic number, because the mean of its divisors is an integer number (598687111).

Almost surely, 2^1197374221 is an apocalyptic number.

It is an amenable number.

1197374221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197374221 is an equidigital number, since it uses as much as digits as its factorization.

1197374221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 1197374221 is about 34603.0955407172. The cubic root of 1197374221 is about 1061.8829180062.

The spelling of 1197374221 in words is "one billion, one hundred ninety-seven million, three hundred seventy-four thousand, two hundred twenty-one".