2101511166 has 16 divisors (see below), whose sum is σ = 4211658624. Its totient is φ = 699064344.

The previous prime is 2101511143. The next prime is 2101511177. The reversal of 2101511166 is 6611151012.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356680 + ... + 362523.

It is an arithmetic number, because the mean of its divisors is an integer number (263228664).

Almost surely, 2^2101511166 is an apocalyptic number.

2101511166 is an abundant number, since it is smaller than the sum of its proper divisors (2110147458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101511166 is a wasteful number, since it uses less digits than its factorization.

2101511166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719695.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 2101511166 is about 45842.2421572069. The cubic root of 2101511166 is about 1280.8862608122.

Adding to 2101511166 its reverse (6611151012), we get a palindrome (8712662178).

The spelling of 2101511166 in words is "two billion, one hundred one million, five hundred eleven thousand, one hundred sixty-six".