7261108121 has 2 divisors, whose sum is σ = 7261108122. Its totient is φ = 7261108120.

The previous prime is 7261108087. The next prime is 7261108133. The reversal of 7261108121 is 1218011627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7260914521 + 193600 = 85211^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 7261108121 - 2²⁶ = 7193999257 is a prime.

It is a super-2 number, since 2×7261108121² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7261108171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3630554060 + 3630554061.

It is an arithmetic number, because the mean of its divisors is an integer number (3630554061).

Almost surely, 2^7261108121 is an apocalyptic number.

It is an amenable number.

7261108121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7261108121 is an equidigital number, since it uses as much as digits as its factorization.

7261108121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 7261108121 is about 85212.1359959953. The cubic root of 7261108121 is about 1936.4262795053.

Adding to 7261108121 its reverse (1218011627), we get a palindrome (8479119748).

The spelling of 7261108121 in words is "seven billion, two hundred sixty-one million, one hundred eight thousand, one hundred twenty-one".