2011510012161 has 32 divisors (see below), whose sum is σ = 2894849717760. Its totient is φ = 1235057946624.

The previous prime is 2011510012159. The next prime is 2011510012163. The reversal of 2011510012161 is 1612100151102.

It is an interprime number because it is at equal distance from previous prime (2011510012159) and next prime (2011510012163).

It is not a de Polignac number, because 2011510012161 - 2¹ = 2011510012159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2011510012163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31017576 + ... + 31082358.

It is an arithmetic number, because the mean of its divisors is an integer number (90464053680).

Almost surely, 2^{2011510012161} is an apocalyptic number.

It is an amenable number.

2011510012161 is a deficient number, since it is larger than the sum of its proper divisors (883339705599).

2011510012161 is a wasteful number, since it uses less digits than its factorization.

2011510012161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66585.

The product of its (nonzero) digits is 120, while the sum is 21.

Adding to 2011510012161 its reverse (1612100151102), we get a palindrome (3623610163263).

The spelling of 2011510012161 in words is "two trillion, eleven billion, five hundred ten million, twelve thousand, one hundred sixty-one".