10120015181 has 4 divisors (see below), whose sum is σ = 10121269152. Its totient is φ = 10118761212.

The previous prime is 10120015177. The next prime is 10120015183. The reversal of 10120015181 is 18151002101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18151002101 = 97 ⋅187123733.

It is a cyclic number.

It is not a de Polignac number, because 10120015181 - 2² = 10120015177 is a prime.

It is a super-2 number, since 2×10120015181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120015183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614801 + ... + 631046.

It is an arithmetic number, because the mean of its divisors is an integer number (2530317288).

Almost surely, 2^10120015181 is an apocalyptic number.

It is an amenable number.

10120015181 is a deficient number, since it is larger than the sum of its proper divisors (1253971).

10120015181 is an equidigital number, since it uses as much as digits as its factorization.

10120015181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253970.

The product of its (nonzero) digits is 80, while the sum is 20.

Adding to 10120015181 its reverse (18151002101), we get a palindrome (28271017282).

The spelling of 10120015181 in words is "ten billion, one hundred twenty million, fifteen thousand, one hundred eighty-one".