1213021032361 has 2 divisors, whose sum is σ = 1213021032362. Its totient is φ = 1213021032360.

The previous prime is 1213021032343. The next prime is 1213021032397. The reversal of 1213021032361 is 1632301203121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1150985665600 + 62035366761 = 1072840^2 + 249069^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213021032361 - 2⁵ = 1213021032329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213021932361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606510516180 + 606510516181.

It is an arithmetic number, because the mean of its divisors is an integer number (606510516181).

Almost surely, 2^{1213021032361} is an apocalyptic number.

It is an amenable number.

1213021032361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213021032361 is an equidigital number, since it uses as much as digits as its factorization.

1213021032361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 1213021032361 its reverse (1632301203121), we get a palindrome (2845322235482).

The spelling of 1213021032361 in words is "one trillion, two hundred thirteen billion, twenty-one million, thirty-two thousand, three hundred sixty-one".