7121658551101 has 2 divisors, whose sum is σ = 7121658551102. Its totient is φ = 7121658551100.

The previous prime is 7121658551039. The next prime is 7121658551123. The reversal of 7121658551101 is 1011558561217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6413075084025 + 708583467076 = 2532405^2 + 841774^2 .

It is a cyclic number.

It is not a de Polignac number, because 7121658551101 - 2¹¹ = 7121658549053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7121658552101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3560829275550 + 3560829275551.

It is an arithmetic number, because the mean of its divisors is an integer number (3560829275551).

Almost surely, 2^{7121658551101} is an apocalyptic number.

It is an amenable number.

7121658551101 is a deficient number, since it is larger than the sum of its proper divisors (1).

7121658551101 is an equidigital number, since it uses as much as digits as its factorization.

7121658551101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84000, while the sum is 43.

The spelling of 7121658551101 in words is "seven trillion, one hundred twenty-one billion, six hundred fifty-eight million, five hundred fifty-one thousand, one hundred one".