12021504445 has 16 divisors (see below), whose sum is σ = 14563014912. Its totient is φ = 9526144320.

The previous prime is 12021504433. The next prime is 12021504479. The reversal of 12021504445 is 54440512021.

It is not a de Polignac number, because 12021504445 - 2¹⁷ = 12021373373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208774 + ... + 260056.

It is an arithmetic number, because the mean of its divisors is an integer number (910188432).

Almost surely, 2^12021504445 is an apocalyptic number.

It is an amenable number.

12021504445 is a deficient number, since it is larger than the sum of its proper divisors (2541510467).

12021504445 is a wasteful number, since it uses less digits than its factorization.

12021504445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51732.

The product of its (nonzero) digits is 6400, while the sum is 28.

The spelling of 12021504445 in words is "twelve billion, twenty-one million, five hundred four thousand, four hundred forty-five".