2121186632 has 8 divisors (see below), whose sum is σ = 3977224950. Its totient is φ = 1060593312.

The previous prime is 2121186631. The next prime is 2121186649. The reversal of 2121186632 is 2366811212.

It can be written as a sum of positive squares in only one way, i.e., 1742728516 + 378458116 = 41746^2 + 19454^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2121186631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132574157 + ... + 132574172.

Almost surely, 2^2121186632 is an apocalyptic number.

It is an amenable number.

2121186632 is a deficient number, since it is larger than the sum of its proper divisors (1856038318).

2121186632 is a wasteful number, since it uses less digits than its factorization.

2121186632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265148335 (or 265148331 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 2121186632 is about 46056.3419302923. The cubic root of 2121186632 is about 1284.8712961882.

Adding to 2121186632 its reverse (2366811212), we get a palindrome (4487997844).

The spelling of 2121186632 in words is "two billion, one hundred twenty-one million, one hundred eighty-six thousand, six hundred thirty-two".