120401522557 has 2 divisors, whose sum is σ = 120401522558. Its totient is φ = 120401522556.

The previous prime is 120401522543. The next prime is 120401522569. The reversal of 120401522557 is 755225104021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96609694041 + 23791828516 = 310821^2 + 154246^2 .

It is an emirp because it is prime and its reverse (755225104021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120401522557 - 2³¹ = 118254038909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120401520557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60200761278 + 60200761279.

It is an arithmetic number, because the mean of its divisors is an integer number (60200761279).

Almost surely, 2^120401522557 is an apocalyptic number.

It is an amenable number.

120401522557 is a deficient number, since it is larger than the sum of its proper divisors (1).

120401522557 is an equidigital number, since it uses as much as digits as its factorization.

120401522557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 34.

Adding to 120401522557 its reverse (755225104021), we get a palindrome (875626626578).

The spelling of 120401522557 in words is "one hundred twenty billion, four hundred one million, five hundred twenty-two thousand, five hundred fifty-seven".