2012162261 has 16 divisors (see below), whose sum is σ = 2073316608. Its totient is φ = 1951872000.

The previous prime is 2012162239. The next prime is 2012162309. The reversal of 2012162261 is 1622612102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012162261 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 (2012162221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4541906 + ... + 4542348.

It is an arithmetic number, because the mean of its divisors is an integer number (129582288).

Almost surely, 2^2012162261 is an apocalyptic number.

It is an amenable number.

2012162261 is a deficient number, since it is larger than the sum of its proper divisors (61154347).

2012162261 is a wasteful number, since it uses less digits than its factorization.

2012162261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2012162261 is about 44857.1316626465. The cubic root of 2012162261 is about 1262.4698051923.

Adding to 2012162261 its reverse (1622612102), we get a palindrome (3634774363).

The spelling of 2012162261 in words is "two billion, twelve million, one hundred sixty-two thousand, two hundred sixty-one".