1220040131441 has 2 divisors, whose sum is σ = 1220040131442. Its totient is φ = 1220040131440.

The previous prime is 1220040131347. The next prime is 1220040131501. The reversal of 1220040131441 is 1441310400221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1138403641600 + 81636489841 = 1066960^2 + 285721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220040131441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220040131941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610020065720 + 610020065721.

It is an arithmetic number, because the mean of its divisors is an integer number (610020065721).

Almost surely, 2^{1220040131441} is an apocalyptic number.

It is an amenable number.

1220040131441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220040131441 is an equidigital number, since it uses as much as digits as its factorization.

1220040131441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1220040131441 its reverse (1441310400221), we get a palindrome (2661350531662).

The spelling of 1220040131441 in words is "one trillion, two hundred twenty billion, forty million, one hundred thirty-one thousand, four hundred forty-one".