2121073144 has 32 divisors (see below), whose sum is σ = 4059609840. Its totient is φ = 1038585600.

The previous prime is 2121073111. The next prime is 2121073147. The reversal of 2121073144 is 4413701212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121073147) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 237724 + ... + 246484.

Almost surely, 2^2121073144 is an apocalyptic number.

It is an amenable number.

2121073144 is a deficient number, since it is larger than the sum of its proper divisors (1938536696).

2121073144 is a wasteful number, since it uses less digits than its factorization.

2121073144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9391 (or 9387 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2121073144 is about 46055.1098576477. The cubic root of 2121073144 is about 1284.8483813298.

Adding to 2121073144 its reverse (4413701212), we get a palindrome (6534774356).

The spelling of 2121073144 in words is "two billion, one hundred twenty-one million, seventy-three thousand, one hundred forty-four".