1194965243221 has 2 divisors, whose sum is σ = 1194965243222. Its totient is φ = 1194965243220.

The previous prime is 1194965243191. The next prime is 1194965243243. The reversal of 1194965243221 is 1223425694911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188503334225 + 6461908996 = 1090185^2 + 80386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1194965243221 - 2²⁹ = 1194428372309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1192965243221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597482621610 + 597482621611.

It is an arithmetic number, because the mean of its divisors is an integer number (597482621611).

Almost surely, 2^{1194965243221} is an apocalyptic number.

It is an amenable number.

1194965243221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1194965243221 is an equidigital number, since it uses as much as digits as its factorization.

1194965243221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The spelling of 1194965243221 in words is "one trillion, one hundred ninety-four billion, nine hundred sixty-five million, two hundred forty-three thousand, two hundred twenty-one".