2153421115 has 8 divisors (see below), whose sum is σ = 2696457888. Its totient is φ = 1647835200.

The previous prime is 2153421091. The next prime is 2153421121. The reversal of 2153421115 is 5111243512.

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

It is not a de Polignac number, because 2153421115 - 2⁹ = 2153420603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2153421115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9362586 + ... + 9362815.

It is an arithmetic number, because the mean of its divisors is an integer number (337057236).

Almost surely, 2^2153421115 is an apocalyptic number.

2153421115 is a deficient number, since it is larger than the sum of its proper divisors (543036773).

2153421115 is a wasteful number, since it uses less digits than its factorization.

2153421115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18725429.

The product of its digits is 1200, while the sum is 25.

The square root of 2153421115 is about 46404.9686456095. The cubic root of 2153421115 is about 1291.3470924881.

Adding to 2153421115 its reverse (5111243512), we get a palindrome (7264664627).

The spelling of 2153421115 in words is "two billion, one hundred fifty-three million, four hundred twenty-one thousand, one hundred fifteen".