1012120231011 has 4 divisors (see below), whose sum is σ = 1349493641352. Its totient is φ = 674746820672.

The previous prime is 1012120231007. The next prime is 1012120231039. The reversal of 1012120231011 is 1101320212101.

1012120231011 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1012120231011 - 2² = 1012120231007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012120231211) 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, 168686705166 + ... + 168686705171.

It is an arithmetic number, because the mean of its divisors is an integer number (337373410338).

Almost surely, 2^{1012120231011} is an apocalyptic number.

1012120231011 is a deficient number, since it is larger than the sum of its proper divisors (337373410341).

1012120231011 is an equidigital number, since it uses as much as digits as its factorization.

1012120231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337373410340.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1012120231011 its reverse (1101320212101), we get a palindrome (2113440443112).

The spelling of 1012120231011 in words is "one trillion, twelve billion, one hundred twenty million, two hundred thirty-one thousand, eleven".