1253110121401 has 2 divisors, whose sum is σ = 1253110121402. Its totient is φ = 1253110121400.

The previous prime is 1253110121311. The next prime is 1253110121423. The reversal of 1253110121401 is 1041210113521.

It is an a-pointer prime, because the next prime (1253110121423) can be obtained adding 1253110121401 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971701091001 + 281409030400 = 985749^2 + 530480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253110121401 - 2¹⁷ = 1253109990329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253110131401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626555060700 + 626555060701.

It is an arithmetic number, because the mean of its divisors is an integer number (626555060701).

Almost surely, 2^{1253110121401} is an apocalyptic number.

It is an amenable number.

1253110121401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253110121401 is an equidigital number, since it uses as much as digits as its factorization.

1253110121401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 1253110121401 its reverse (1041210113521), we get a palindrome (2294320234922).

The spelling of 1253110121401 in words is "one trillion, two hundred fifty-three billion, one hundred ten million, one hundred twenty-one thousand, four hundred one".