101120125181 has 2 divisors, whose sum is σ = 101120125182. Its totient is φ = 101120125180.

The previous prime is 101120125159. The next prime is 101120125189. The reversal of 101120125181 is 181521021101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82579217956 + 18540907225 = 287366^2 + 136165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101120125181 is a prime.

It is a super-2 number, since 2×101120125181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101120125189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50560062590 + 50560062591.

It is an arithmetic number, because the mean of its divisors is an integer number (50560062591).

Almost surely, 2^101120125181 is an apocalyptic number.

It is an amenable number.

101120125181 is a deficient number, since it is larger than the sum of its proper divisors (1).

101120125181 is an equidigital number, since it uses as much as digits as its factorization.

101120125181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 23.

Adding to 101120125181 its reverse (181521021101), we get a palindrome (282641146282).

The spelling of 101120125181 in words is "one hundred one billion, one hundred twenty million, one hundred twenty-five thousand, one hundred eighty-one".