2123132644 has 6 divisors (see below), whose sum is σ = 3715482134. Its totient is φ = 1061566320.

The previous prime is 2123132587. The next prime is 2123132653. The reversal of 2123132644 is 4462313212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2064793600 + 58339044 = 45440^2 + 7638^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265391577 + ... + 265391584.

Almost surely, 2^2123132644 is an apocalyptic number.

It is an amenable number.

2123132644 is a deficient number, since it is larger than the sum of its proper divisors (1592349490).

2123132644 is a wasteful number, since it uses less digits than its factorization.

2123132644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530783165 (or 530783163 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 2123132644 is about 46077.4635152587. The cubic root of 2123132644 is about 1285.2640968788.

Adding to 2123132644 its reverse (4462313212), we get a palindrome (6585445856).

The spelling of 2123132644 in words is "two billion, one hundred twenty-three million, one hundred thirty-two thousand, six hundred forty-four".