12020021299 has 24 divisors (see below), whose sum is σ = 14340677120. Its totient is φ = 10007141760.

The previous prime is 12020021263. The next prime is 12020021341. The reversal of 12020021299 is 99212002021.

It is not a de Polignac number, because 12020021299 - 2¹¹ = 12020019251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12020021399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169687 + ... + 229855.

Almost surely, 2^12020021299 is an apocalyptic number.

12020021299 is a deficient number, since it is larger than the sum of its proper divisors (2320655821).

12020021299 is a wasteful number, since it uses less digits than its factorization.

12020021299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60331 (or 60320 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 12020021299 in words is "twelve billion, twenty million, twenty-one thousand, two hundred ninety-nine".