2121123152 has 10 divisors (see below), whose sum is σ = 4109676138. Its totient is φ = 1060561568.

The previous prime is 2121123131. The next prime is 2121123163. The reversal of 2121123152 is 2513211212.

It can be written as a sum of positive squares in only one way, i.e., 1526933776 + 594189376 = 39076^2 + 24376^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66285083 + ... + 66285114.

Almost surely, 2^2121123152 is an apocalyptic number.

It is an amenable number.

2121123152 is a deficient number, since it is larger than the sum of its proper divisors (1988552986).

2121123152 is a wasteful number, since it uses less digits than its factorization.

2121123152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132570205 (or 132570199 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 2121123152 is about 46055.6527692313. The cubic root of 2121123152 is about 1284.8584787645.

Adding to 2121123152 its reverse (2513211212), we get a palindrome (4634334364).

The spelling of 2121123152 in words is "two billion, one hundred twenty-one million, one hundred twenty-three thousand, one hundred fifty-two".