12021102102009 has 32 divisors (see below), whose sum is σ = 21520294677504. Its totient is φ = 5764364642880.

The previous prime is 12021102102007. The next prime is 12021102102011. The reversal of 12021102102009 is 90020120112021.

It is an interprime number because it is at equal distance from previous prime (12021102102007) and next prime (12021102102011).

It is not a de Polignac number, because 12021102102009 - 2¹ = 12021102102007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12021102102007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2001512499 + ... + 2001518504.

It is an arithmetic number, because the mean of its divisors is an integer number (672509208672).

Almost surely, 2^{12021102102009} is an apocalyptic number.

It is an amenable number.

12021102102009 is a deficient number, since it is larger than the sum of its proper divisors (9499192575495).

12021102102009 is a wasteful number, since it uses less digits than its factorization.

12021102102009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003031037.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 12021102102009 in words is "twelve trillion, twenty-one billion, one hundred two million, one hundred two thousand, nine".