2153042111 has 4 divisors (see below), whose sum is σ = 2348773224. Its totient is φ = 1957311000.

The previous prime is 2153042081. The next prime is 2153042131. The reversal of 2153042111 is 1112403512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2153042111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153042131) 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, 97865540 + ... + 97865561.

It is an arithmetic number, because the mean of its divisors is an integer number (587193306).

Almost surely, 2^2153042111 is an apocalyptic number.

2153042111 is a deficient number, since it is larger than the sum of its proper divisors (195731113).

2153042111 is a wasteful number, since it uses less digits than its factorization.

2153042111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195731112.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2153042111 is about 46400.8848083741. The cubic root of 2153042111 is about 1291.2713286371.

Adding to 2153042111 its reverse (1112403512), we get a palindrome (3265445623).

The spelling of 2153042111 in words is "two billion, one hundred fifty-three million, forty-two thousand, one hundred eleven".