2802121 has 16 divisors (see below), whose sum is σ = 3404800. Its totient is φ = 2255040.

The previous prime is 2802109. The next prime is 2802131. The reversal of 2802121 is 1212082.

It is a cyclic number.

It is not a de Polignac number, because 2802121 - 2⁵ = 2802089 is a prime.

2802121 is a modest number, since divided by 2121 gives 280 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2802095 and 2802104.

It is not an unprimeable number, because it can be changed into a prime (2802131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7855 + ... + 8203.

It is an arithmetic number, because the mean of its divisors is an integer number (212800).

2^2802121 is an apocalyptic number.

It is an amenable number.

2802121 is a deficient number, since it is larger than the sum of its proper divisors (602679).

2802121 is a wasteful number, since it uses less digits than its factorization.

2802121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2802121 is about 1673.9537030635. The cubic root of 2802121 is about 140.9815545175.

It can be divided in two parts, 280 and 2121, that added together give a 4-th power (2401 = 7⁴).

The spelling of 2802121 in words is "two million, eight hundred two thousand, one hundred twenty-one".