1012122111111 has 8 divisors (see below), whose sum is σ = 1349654221440. Its totient is φ = 674669037432.

The previous prime is 1012122111097. The next prime is 1012122111113. The reversal of 1012122111111 is 1111112212101.

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

It is not a de Polignac number, because 1012122111111 - 2¹⁹ = 1012121586823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012122111113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19729275 + ... + 19780508.

It is an arithmetic number, because the mean of its divisors is an integer number (168706777680).

Almost surely, 2^{1012122111111} is an apocalyptic number.

1012122111111 is a deficient number, since it is larger than the sum of its proper divisors (337532110329).

1012122111111 is an equidigital number, since it uses as much as digits as its factorization.

1012122111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39518325.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1012122111111 its reverse (1111112212101), we get a palindrome (2123234323212).

The spelling of 1012122111111 in words is "one trillion, twelve billion, one hundred twenty-two million, one hundred eleven thousand, one hundred eleven".