1121722051249 has 2 divisors, whose sum is σ = 1121722051250. Its totient is φ = 1121722051248.

The previous prime is 1121722051211. The next prime is 1121722051259. The reversal of 1121722051249 is 9421502271211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1092066800400 + 29655250849 = 1045020^2 + 172207^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121722051249 - 2³⁹ = 571966237361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121722051259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560861025624 + 560861025625.

It is an arithmetic number, because the mean of its divisors is an integer number (560861025625).

Almost surely, 2^{1121722051249} is an apocalyptic number.

It is an amenable number.

1121722051249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121722051249 is an equidigital number, since it uses as much as digits as its factorization.

1121722051249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 1121722051249 in words is "one trillion, one hundred twenty-one billion, seven hundred twenty-two million, fifty-one thousand, two hundred forty-nine".