5555010121 has 2 divisors, whose sum is σ = 5555010122. Its totient is φ = 5555010120.

The previous prime is 5555010119. The next prime is 5555010127. The reversal of 5555010121 is 1210105555.

5555010121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4233324096 + 1321686025 = 65064^2 + 36355^2 .

It is a cyclic number.

It is not a de Polignac number, because 5555010121 - 2¹ = 5555010119 is a prime.

Together with 5555010119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5555010127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777505060 + 2777505061.

It is an arithmetic number, because the mean of its divisors is an integer number (2777505061).

Almost surely, 2^5555010121 is an apocalyptic number.

It is an amenable number.

5555010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5555010121 is an equidigital number, since it uses as much as digits as its factorization.

5555010121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1250, while the sum is 25.

The square root of 5555010121 is about 74531.9402739523. The cubic root of 5555010121 is about 1771.0396523370.

Adding to 5555010121 its reverse (1210105555), we get a palindrome (6765115676).

The spelling of 5555010121 in words is "five billion, five hundred fifty-five million, ten thousand, one hundred twenty-one".