2012166461 has 4 divisors (see below), whose sum is σ = 2130529212. Its totient is φ = 1893803712.

The previous prime is 2012166451. The next prime is 2012166463. The reversal of 2012166461 is 1646612102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1646612102 = 2 ⋅823306051.

It can be written as a sum of positive squares in 2 ways, for example, as 1736805625 + 275360836 = 41675^2 + 16594^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012166461 - 2²² = 2007972157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012166463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59181350 + ... + 59181383.

It is an arithmetic number, because the mean of its divisors is an integer number (532632303).

Almost surely, 2^2012166461 is an apocalyptic number.

It is an amenable number.

2012166461 is a deficient number, since it is larger than the sum of its proper divisors (118362751).

2012166461 is a wasteful number, since it uses less digits than its factorization.

2012166461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118362750.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2012166461 is about 44857.1784779203. The cubic root of 2012166461 is about 1262.4706835790.

Adding to 2012166461 its reverse (1646612102), we get a palindrome (3658778563).

The spelling of 2012166461 in words is "two billion, twelve million, one hundred sixty-six thousand, four hundred sixty-one".