12201210021000 has 1536 divisors, whose sum is σ = 52788056555520. Its totient is φ = 2276771328000.

The previous prime is 12201210020981. The next prime is 12201210021001. The reversal of 12201210021000 is 12001210221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12201210021001) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1444438777 + ... + 1444447223.

It is an arithmetic number, because the mean of its divisors is an integer number (34367224320).

Almost surely, 2^{12201210021000} is an apocalyptic number.

12201210021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12201210021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26394028277760).

12201210021000 is an abundant number, since it is smaller than the sum of its proper divisors (40586846534520).

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

12201210021000 is a wasteful number, since it uses less digits than its factorization.

12201210021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552 (or 8525 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12201210021000 its reverse (12001210221), we get a palindrome (12213211231221).

The spelling of 12201210021000 in words is "twelve trillion, two hundred one billion, two hundred ten million, twenty-one thousand".