1221514027 has 2 divisors, whose sum is σ = 1221514028. Its totient is φ = 1221514026.

The previous prime is 1221513991. The next prime is 1221514031. The reversal of 1221514027 is 7204151221.

It is a strong prime.

It is an emirp because it is prime and its reverse (7204151221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1221514027 - 2⁷ = 1221513899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1221513992 and 1221514010.

It is not a weakly prime, because it can be changed into another prime (1221514087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610757013 + 610757014.

It is an arithmetic number, because the mean of its divisors is an integer number (610757014).

Almost surely, 2^1221514027 is an apocalyptic number.

1221514027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221514027 is an equidigital number, since it uses as much as digits as its factorization.

1221514027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1221514027 is about 34950.1649066210. The cubic root of 1221514027 is about 1068.9715646016.

Adding to 1221514027 its reverse (7204151221), we get a palindrome (8425665248).

The spelling of 1221514027 in words is "one billion, two hundred twenty-one million, five hundred fourteen thousand, twenty-seven".