7122126516541 has 2 divisors, whose sum is σ = 7122126516542. Its totient is φ = 7122126516540.

The previous prime is 7122126516497. The next prime is 7122126516619. The reversal of 7122126516541 is 1456156212217.

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., 6756620422500 + 365506094041 = 2599350^2 + 604571^2 .

It is a cyclic number.

It is not a de Polignac number, because 7122126516541 - 2²³ = 7122118127933 is a prime.

It is a super-2 number, since 2×7122126516541² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7122126511541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3561063258270 + 3561063258271.

It is an arithmetic number, because the mean of its divisors is an integer number (3561063258271).

Almost surely, 2^{7122126516541} is an apocalyptic number.

It is an amenable number.

7122126516541 is a deficient number, since it is larger than the sum of its proper divisors (1).

7122126516541 is an equidigital number, since it uses as much as digits as its factorization.

7122126516541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The spelling of 7122126516541 in words is "seven trillion, one hundred twenty-two billion, one hundred twenty-six million, five hundred sixteen thousand, five hundred forty-one".