1213131023201 has 2 divisors, whose sum is σ = 1213131023202. Its totient is φ = 1213131023200.

The previous prime is 1213131023189. The next prime is 1213131023207. The reversal of 1213131023201 is 1023201313121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1069205632576 + 143925390625 = 1034024^2 + 379375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213131023201 - 2¹⁴ = 1213131006817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213131023207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606565511600 + 606565511601.

It is an arithmetic number, because the mean of its divisors is an integer number (606565511601).

Almost surely, 2^{1213131023201} is an apocalyptic number.

It is an amenable number.

1213131023201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213131023201 is an equidigital number, since it uses as much as digits as its factorization.

1213131023201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1213131023201 its reverse (1023201313121), we get a palindrome (2236332336322).

The spelling of 1213131023201 in words is "one trillion, two hundred thirteen billion, one hundred thirty-one million, twenty-three thousand, two hundred one".