21120145041 has 8 divisors (see below), whose sum is σ = 29816675424. Its totient is φ = 13251855680.

The previous prime is 21120145003. The next prime is 21120145043. The reversal of 21120145041 is 14054102112.

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

It is a cyclic number.

It is not a de Polignac number, because 21120145041 - 2¹¹ = 21120142993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21120144999 and 21120145017.

It is not an unprimeable number, because it can be changed into a prime (21120145043) 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, 207060195 + ... + 207060296.

It is an arithmetic number, because the mean of its divisors is an integer number (3727084428).

Almost surely, 2^21120145041 is an apocalyptic number.

It is an amenable number.

21120145041 is a deficient number, since it is larger than the sum of its proper divisors (8696530383).

21120145041 is a wasteful number, since it uses less digits than its factorization.

21120145041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414120511.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 21120145041 its reverse (14054102112), we get a palindrome (35174247153).

The spelling of 21120145041 in words is "twenty-one billion, one hundred twenty million, one hundred forty-five thousand, forty-one".