1122620315521 has 2 divisors, whose sum is σ = 1122620315522. Its totient is φ = 1122620315520.

The previous prime is 1122620315513. The next prime is 1122620315561. The reversal of 1122620315521 is 1255130262211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101473339121 + 21146976400 = 1049511^2 + 145420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122620315521 - 2³ = 1122620315513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122620315561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561310157760 + 561310157761.

It is an arithmetic number, because the mean of its divisors is an integer number (561310157761).

Almost surely, 2^{1122620315521} is an apocalyptic number.

It is an amenable number.

1122620315521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122620315521 is an equidigital number, since it uses as much as digits as its factorization.

1122620315521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 1122620315521 its reverse (1255130262211), we get a palindrome (2377750577732).

The spelling of 1122620315521 in words is "one trillion, one hundred twenty-two billion, six hundred twenty million, three hundred fifteen thousand, five hundred twenty-one".