12021201009 has 48 divisors (see below), whose sum is σ = 18367824384. Its totient is φ = 7854537600.

The previous prime is 12021200977. The next prime is 12021201043. The reversal of 12021201009 is 90010212021.

It is not a de Polignac number, because 12021201009 - 2⁵ = 12021200977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021200982 and 12021201000.

It is not an unprimeable number, because it can be changed into a prime (12021201809) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4638304 + ... + 4640894.

It is an arithmetic number, because the mean of its divisors is an integer number (382663008).

Almost surely, 2^12021201009 is an apocalyptic number.

It is an amenable number.

12021201009 is a deficient number, since it is larger than the sum of its proper divisors (6346623375).

12021201009 is an equidigital number, since it uses as much as digits as its factorization.

12021201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980 (or 2968 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 12021201009 in words is "twelve billion, twenty-one million, two hundred one thousand, nine".