1201144891357 has 2 divisors, whose sum is σ = 1201144891358. Its totient is φ = 1201144891356.

The previous prime is 1201144891339. The next prime is 1201144891381. The reversal of 1201144891357 is 7531984411021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199964694041 + 1180197316 = 1095429^2 + 34354^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201144891357 - 2¹⁹ = 1201144367069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201144897357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600572445678 + 600572445679.

It is an arithmetic number, because the mean of its divisors is an integer number (600572445679).

Almost surely, 2^{1201144891357} is an apocalyptic number.

It is an amenable number.

1201144891357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201144891357 is an equidigital number, since it uses as much as digits as its factorization.

1201144891357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 1201144891357 in words is "one trillion, two hundred one billion, one hundred forty-four million, eight hundred ninety-one thousand, three hundred fifty-seven".