1552231530121 has 2 divisors, whose sum is σ = 1552231530122. Its totient is φ = 1552231530120.

The previous prime is 1552231530097. The next prime is 1552231530167. The reversal of 1552231530121 is 1210351322551.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1550236657225 + 1994872896 = 1245085^2 + 44664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552231530121 - 2⁵ = 1552231530089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1552231539121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776115765060 + 776115765061.

It is an arithmetic number, because the mean of its divisors is an integer number (776115765061).

Almost surely, 2^{1552231530121} is an apocalyptic number.

It is an amenable number.

1552231530121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552231530121 is an equidigital number, since it uses as much as digits as its factorization.

1552231530121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 1552231530121 its reverse (1210351322551), we get a palindrome (2762582852672).

The spelling of 1552231530121 in words is "one trillion, five hundred fifty-two billion, two hundred thirty-one million, five hundred thirty thousand, one hundred twenty-one".