21041301045 has 32 divisors (see below), whose sum is σ = 34836998400. Its totient is φ = 10831944704.

The previous prime is 21041301037. The next prime is 21041301049. The reversal of 21041301045 is 54010314012.

It is a cyclic number.

It is not a de Polignac number, because 21041301045 - 2³ = 21041301037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041301049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2968816 + ... + 2975894.

It is an arithmetic number, because the mean of its divisors is an integer number (1088656200).

Almost surely, 2^21041301045 is an apocalyptic number.

It is an amenable number.

21041301045 is a deficient number, since it is larger than the sum of its proper divisors (13795697355).

21041301045 is a wasteful number, since it uses less digits than its factorization.

21041301045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13949.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 21041301045 its reverse (54010314012), we get a palindrome (75051615057).

The spelling of 21041301045 in words is "twenty-one billion, forty-one million, three hundred one thousand, forty-five".