21230150045 has 16 divisors (see below), whose sum is σ = 27440902272. Its totient is φ = 15674783040.

The previous prime is 21230150041. The next prime is 21230150077. The reversal of 21230150045 is 54005103212.

It is not a de Polignac number, because 21230150045 - 2² = 21230150041 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 21230150045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230150041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369104 + ... + 422726.

It is an arithmetic number, because the mean of its divisors is an integer number (1715056392).

Almost surely, 2^21230150045 is an apocalyptic number.

It is an amenable number.

21230150045 is a deficient number, since it is larger than the sum of its proper divisors (6210752227).

21230150045 is a wasteful number, since it uses less digits than its factorization.

21230150045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59732.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 21230150045 its reverse (54005103212), we get a palindrome (75235253257).

The spelling of 21230150045 in words is "twenty-one billion, two hundred thirty million, one hundred fifty thousand, forty-five".