1231542210601 has 2 divisors, whose sum is σ = 1231542210602. Its totient is φ = 1231542210600.

The previous prime is 1231542210443. The next prime is 1231542210629. The reversal of 1231542210601 is 1060122451321.

It is an a-pointer prime, because the next prime (1231542210629) can be obtained adding 1231542210601 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 872290621225 + 359251589376 = 933965^2 + 599376^2 .

It is an emirp because it is prime and its reverse (1060122451321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1231542210601 - 2¹⁹ = 1231541686313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1231542210601.

It is not a weakly prime, because it can be changed into another prime (1231542210631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615771105300 + 615771105301.

It is an arithmetic number, because the mean of its divisors is an integer number (615771105301).

Almost surely, 2^{1231542210601} is an apocalyptic number.

It is an amenable number.

1231542210601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231542210601 is an equidigital number, since it uses as much as digits as its factorization.

1231542210601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 1231542210601 its reverse (1060122451321), we get a palindrome (2291664661922).

The spelling of 1231542210601 in words is "one trillion, two hundred thirty-one billion, five hundred forty-two million, two hundred ten thousand, six hundred one".