12021021023202 has 12 divisors (see below), whose sum is σ = 26045545550310. Its totient is φ = 4007007007728.

The previous prime is 12021021023161. The next prime is 12021021023213. The reversal of 12021021023202 is 20232012012021.

12021021023202 is a `hidden beast` number, since 1 + 20 + 210 + 210 + 23 + 202 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11431303002441 + 589718020761 = 3381021^2 + 767931^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 667834501289 = 12021021023202 / (1 + 2 + 0 + 2 + 1 + 0 + 2 + 1 + 0 + 2 + 3 + 2 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 333917250627 + ... + 333917250662.

Almost surely, 2^{12021021023202} is an apocalyptic number.

12021021023202 is an abundant number, since it is smaller than the sum of its proper divisors (14024524527108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021021023202 is a wasteful number, since it uses less digits than its factorization.

12021021023202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667834501297 (or 667834501294 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12021021023202 its reverse (20232012012021), we get a palindrome (32253033035223).

The spelling of 12021021023202 in words is "twelve trillion, twenty-one billion, twenty-one million, twenty-three thousand, two hundred two".