1220014240421 has 2 divisors, whose sum is σ = 1220014240422. Its totient is φ = 1220014240420.

The previous prime is 1220014240369. The next prime is 1220014240451. The reversal of 1220014240421 is 1240424100221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 873047296900 + 346966943521 = 934370^2 + 589039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220014240421 - 2¹⁸ = 1220013978277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220014240451) 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, 610007120210 + 610007120211.

It is an arithmetic number, because the mean of its divisors is an integer number (610007120211).

Almost surely, 2^{1220014240421} is an apocalyptic number.

It is an amenable number.

1220014240421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220014240421 is an equidigital number, since it uses as much as digits as its factorization.

1220014240421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1220014240421 its reverse (1240424100221), we get a palindrome (2460438340642).

The spelling of 1220014240421 in words is "one trillion, two hundred twenty billion, fourteen million, two hundred forty thousand, four hundred twenty-one".