12021021020003 has 16 divisors (see below), whose sum is σ = 12841642229760. Its totient is φ = 11227762509600.

The previous prime is 12021021019967. The next prime is 12021021020011. The reversal of 12021021020003 is 30002012012021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12021021020003 - 2¹⁴ = 12021021003619 is a prime.

It is a super-2 number, since 2×12021021020003² (a number of 27 digits) contains 22 as substring.

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 12021021020003.

It is not an unprimeable number, because it can be changed into a prime (12021021020303) 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, 251075 + ... + 4909692.

It is an arithmetic number, because the mean of its divisors is an integer number (802602639360).

Almost surely, 2^{12021021020003} is an apocalyptic number.

12021021020003 is a deficient number, since it is larger than the sum of its proper divisors (820621209757).

12021021020003 is a wasteful number, since it uses less digits than its factorization.

12021021020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5163418.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12021021020003 its reverse (30002012012021), we get a palindrome (42023033032024).

The spelling of 12021021020003 in words is "twelve trillion, twenty-one billion, twenty-one million, twenty thousand, three".