2011012120105 has 16 divisors (see below), whose sum is σ = 2453142988800. Its totient is φ = 1582198637760.

The previous prime is 2011012120069. The next prime is 2011012120123. The reversal of 2011012120105 is 5010212101102.

It is not a de Polignac number, because 2011012120105 - 2⁹ = 2011012119593 is a prime.

It is a super-2 number, since 2×2011012120105² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1558636 + ... + 2539954.

It is an arithmetic number, because the mean of its divisors is an integer number (153321436800).

Almost surely, 2^{2011012120105} is an apocalyptic number.

It is an amenable number.

2011012120105 is a deficient number, since it is larger than the sum of its proper divisors (442130868695).

2011012120105 is an equidigital number, since it uses as much as digits as its factorization.

2011012120105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988104.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 2011012120105 its reverse (5010212101102), we get a palindrome (7021224221207).

The spelling of 2011012120105 in words is "two trillion, eleven billion, twelve million, one hundred twenty thousand, one hundred five".