1321212203027 has 2 divisors, whose sum is σ = 1321212203028. Its totient is φ = 1321212203026.

The previous prime is 1321212202913. The next prime is 1321212203029. The reversal of 1321212203027 is 7203022121231.

It is a strong prime.

It is an emirp because it is prime and its reverse (7203022121231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321212203027 - 2¹⁰ = 1321212202003 is a prime.

Together with 1321212203029, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1321212202987 and 1321212203005.

It is not a weakly prime, because it can be changed into another prime (1321212203029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660606101513 + 660606101514.

It is an arithmetic number, because the mean of its divisors is an integer number (660606101514).

Almost surely, 2^{1321212203027} is an apocalyptic number.

1321212203027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321212203027 is an equidigital number, since it uses as much as digits as its factorization.

1321212203027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 1321212203027 its reverse (7203022121231), we get a palindrome (8524234324258).

The spelling of 1321212203027 in words is "one trillion, three hundred twenty-one billion, two hundred twelve million, two hundred three thousand, twenty-seven".