1221212002027 has 2 divisors, whose sum is σ = 1221212002028. Its totient is φ = 1221212002026.

The previous prime is 1221212001991. The next prime is 1221212002033. The reversal of 1221212002027 is 7202002121221.

It is a strong prime.

It is an emirp because it is prime and its reverse (7202002121221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1221212002027 - 2²⁷ = 1221077784299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1221212001989 and 1221212002007.

It is not a weakly prime, because it can be changed into another prime (1221212002037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610606001013 + 610606001014.

It is an arithmetic number, because the mean of its divisors is an integer number (610606001014).

Almost surely, 2^{1221212002027} is an apocalyptic number.

1221212002027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221212002027 is an equidigital number, since it uses as much as digits as its factorization.

1221212002027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 1221212002027 its reverse (7202002121221), we get a palindrome (8423214123248).

The spelling of 1221212002027 in words is "one trillion, two hundred twenty-one billion, two hundred twelve million, two thousand, twenty-seven".