2153121 has 8 divisors (see below), whose sum is σ = 2882304. Its totient is φ = 1429680.

The previous prime is 2153113. The next prime is 2153149. The reversal of 2153121 is 1213512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2153121 - 2³ = 2153113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2153121.

It is not an unprimeable number, because it can be changed into a prime (2153111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (360288).

2^2153121 is an apocalyptic number.

It is an amenable number.

2153121 is a deficient number, since it is larger than the sum of its proper divisors (729183).

2153121 is a wasteful number, since it uses less digits than its factorization.

2153121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871.

The product of its digits is 60, while the sum is 15.

The square root of 2153121 is about 1467.3516960838. The cubic root of 2153121 is about 129.1287099479.

Adding to 2153121 its reverse (1213512), we get a palindrome (3366633).

The spelling of 2153121 in words is "two million, one hundred fifty-three thousand, one hundred twenty-one".