545113120121 has 2 divisors, whose sum is σ = 545113120122. Its totient is φ = 545113120120.

The previous prime is 545113120061. The next prime is 545113120127. The reversal of 545113120121 is 121021311545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487118847721 + 57994272400 = 697939^2 + 240820^2 .

It is a cyclic number.

It is not a de Polignac number, because 545113120121 - 2¹⁴ = 545113103737 is a prime.

It is a super-3 number, since 3×545113120121³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (545113120127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272556560060 + 272556560061.

It is an arithmetic number, because the mean of its divisors is an integer number (272556560061).

Almost surely, 2^545113120121 is an apocalyptic number.

It is an amenable number.

545113120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

545113120121 is an equidigital number, since it uses as much as digits as its factorization.

545113120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 545113120121 its reverse (121021311545), we get a palindrome (666134431666).

The spelling of 545113120121 in words is "five hundred forty-five billion, one hundred thirteen million, one hundred twenty thousand, one hundred twenty-one".