2121076156 has 12 divisors (see below), whose sum is σ = 3712864960. Its totient is φ = 1060257600.

The previous prime is 2121076147. The next prime is 2121076157. The reversal of 2121076156 is 6516701212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121076157) 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 in 3 ways as a sum of consecutive naturals, for example, 52620 + ... + 83731.

Almost surely, 2^2121076156 is an apocalyptic number.

It is an amenable number.

2121076156 is a deficient number, since it is larger than the sum of its proper divisors (1591788804).

2121076156 is a wasteful number, since it uses less digits than its factorization.

2121076156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140244 (or 140242 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2121076156 is about 46055.1425575907. The cubic root of 2121076156 is about 1284.8489895065.

Adding to 2121076156 its reverse (6516701212), we get a palindrome (8637777368).

The spelling of 2121076156 in words is "two billion, one hundred twenty-one million, seventy-six thousand, one hundred fifty-six".