1212014212421 has 2 divisors, whose sum is σ = 1212014212422. Its totient is φ = 1212014212420.

The previous prime is 1212014212397. The next prime is 1212014212529. The reversal of 1212014212421 is 1242124102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1203123796900 + 8890415521 = 1096870^2 + 94289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212014212421 is a prime.

It is a super-2 number, since 2×1212014212421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212014212621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606007106210 + 606007106211.

It is an arithmetic number, because the mean of its divisors is an integer number (606007106211).

Almost surely, 2^{1212014212421} is an apocalyptic number.

It is an amenable number.

1212014212421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212014212421 is an equidigital number, since it uses as much as digits as its factorization.

1212014212421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 1212014212421 its reverse (1242124102121), we get a palindrome (2454138314542).

The spelling of 1212014212421 in words is "one trillion, two hundred twelve billion, fourteen million, two hundred twelve thousand, four hundred twenty-one".