2773870121 has 4 divisors (see below), whose sum is σ = 3026040144. Its totient is φ = 2521700100.

The previous prime is 2773870109. The next prime is 2773870147. The reversal of 2773870121 is 1210783772.

It is a happy number.

2773870121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2773870121 - 2¹⁰ = 2773869097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2773870171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126084995 + ... + 126085016.

It is an arithmetic number, because the mean of its divisors is an integer number (756510036).

Almost surely, 2^2773870121 is an apocalyptic number.

It is an amenable number.

2773870121 is a deficient number, since it is larger than the sum of its proper divisors (252170023).

2773870121 is a wasteful number, since it uses less digits than its factorization.

2773870121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252170022.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 2773870121 is about 52667.5433355307. The cubic root of 2773870121 is about 1405.0616304234.

The spelling of 2773870121 in words is "two billion, seven hundred seventy-three million, eight hundred seventy thousand, one hundred twenty-one".