30021321045 has 16 divisors (see below), whose sum is σ = 48038360832. Its totient is φ = 16009955520.

The previous prime is 30021321019. The next prime is 30021321047. The reversal of 30021321045 is 54012312003.

It is not a de Polignac number, because 30021321045 - 2¹⁸ = 30021058901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021321047) 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, 99735 + ... + 264555.

It is an arithmetic number, because the mean of its divisors is an integer number (3002397552).

Almost surely, 2^30021321045 is an apocalyptic number.

It is an amenable number.

30021321045 is a deficient number, since it is larger than the sum of its proper divisors (18017039787).

30021321045 is a wasteful number, since it uses less digits than its factorization.

30021321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176972.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 30021321045 its reverse (54012312003), we get a palindrome (84033633048).

The spelling of 30021321045 in words is "thirty billion, twenty-one million, three hundred twenty-one thousand, forty-five".