12020200121000 has 128 divisors (see below), whose sum is σ = 29510581201920. Its totient is φ = 4576701600000.

The previous prime is 12020200120997. The next prime is 12020200121003. The reversal of 12020200121000 is 12100202021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12020200120997) and next prime (12020200121003).

It is not an unprimeable number, because it can be changed into a prime (12020200121003) 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, 1287266 + ... + 5069265.

It is an arithmetic number, because the mean of its divisors is an integer number (230551415640).

Almost surely, 2^{12020200121000} is an apocalyptic number.

12020200121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020200121000 is an abundant number, since it is smaller than the sum of its proper divisors (17490381080920).

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

12020200121000 is a wasteful number, since it uses less digits than its factorization.

12020200121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356644 (or 6356630 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12020200121000 its reverse (12100202021), we get a palindrome (12032300323021).

The spelling of 12020200121000 in words is "twelve trillion, twenty billion, two hundred million, one hundred twenty-one thousand".