1220134334021 has 2 divisors, whose sum is σ = 1220134334022. Its totient is φ = 1220134334020.

The previous prime is 1220134333969. The next prime is 1220134334063. The reversal of 1220134334021 is 1204334310221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950451457921 + 269682876100 = 974911^2 + 519310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220134334021 - 2¹⁰ = 1220134332997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220134334071) 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, 610067167010 + 610067167011.

It is an arithmetic number, because the mean of its divisors is an integer number (610067167011).

Almost surely, 2^{1220134334021} is an apocalyptic number.

It is an amenable number.

1220134334021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220134334021 is an equidigital number, since it uses as much as digits as its factorization.

1220134334021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1220134334021 its reverse (1204334310221), we get a palindrome (2424468644242).

The spelling of 1220134334021 in words is "one trillion, two hundred twenty billion, one hundred thirty-four million, three hundred thirty-four thousand, twenty-one".