2981121 has 16 divisors (see below), whose sum is σ = 4670400. Its totient is φ = 1667520.

The previous prime is 2981089. The next prime is 2981123. The reversal of 2981121 is 1211892.

2981121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2981121 - 2⁵ = 2981089 is a prime.

It is an Ulam number.

2981121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2981091 and 2981100.

It is not an unprimeable number, because it can be changed into a prime (2981123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3046 + ... + 3903.

It is an arithmetic number, because the mean of its divisors is an integer number (291900).

2^2981121 is an apocalyptic number.

It is an amenable number.

2981121 is a deficient number, since it is larger than the sum of its proper divisors (1689279).

2981121 is a wasteful number, since it uses less digits than its factorization.

2981121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976.

The product of its digits is 288, while the sum is 24.

The square root of 2981121 is about 1726.5923085662. The cubic root of 2981121 is about 143.9217842984.

The spelling of 2981121 in words is "two million, nine hundred eighty-one thousand, one hundred twenty-one".