1012120121011 has 8 divisors (see below), whose sum is σ = 1012980674160. Its totient is φ = 1011259894272.

The previous prime is 1012120120919. The next prime is 1012120121029. The reversal of 1012120121011 is 1101210212101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012120121011 - 2²¹ = 1012118023859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012120120982 and 1012120121000.

It is not an unprimeable number, because it can be changed into a prime (1012120191011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6335331 + ... + 6493123.

It is an arithmetic number, because the mean of its divisors is an integer number (126622584270).

Almost surely, 2^{1012120121011} is an apocalyptic number.

1012120121011 is a deficient number, since it is larger than the sum of its proper divisors (860553149).

1012120121011 is a wasteful number, since it uses less digits than its factorization.

1012120121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163205.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1012120121011 its reverse (1101210212101), we get a palindrome (2113330333112).

The spelling of 1012120121011 in words is "one trillion, twelve billion, one hundred twenty million, one hundred twenty-one thousand, eleven".