2153011421 has 24 divisors (see below), whose sum is σ = 2436527520. Its totient is φ = 1886206400.

The previous prime is 2153011381. The next prime is 2153011459. The reversal of 2153011421 is 1241103512.

It is a de Polignac number, because none of the positive numbers 2^k-2153011421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2153011393 and 2153011402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153011481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1822451 + ... + 1823631.

It is an arithmetic number, because the mean of its divisors is an integer number (101521980).

Almost surely, 2^2153011421 is an apocalyptic number.

It is an amenable number.

2153011421 is a deficient number, since it is larger than the sum of its proper divisors (283516099).

2153011421 is a wasteful number, since it uses less digits than its factorization.

2153011421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357 (or 1304 counting only the distinct ones).

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

The square root of 2153011421 is about 46400.5541022949. The cubic root of 2153011421 is about 1291.2651932400.

Adding to 2153011421 its reverse (1241103512), we get a palindrome (3394114933).

The spelling of 2153011421 in words is "two billion, one hundred fifty-three million, eleven thousand, four hundred twenty-one".