12212000021000 has 256 divisors, whose sum is σ = 32144604710400. Its totient is φ = 4311280512000.

The previous prime is 12212000020967. The next prime is 12212000021057. The reversal of 12212000021000 is 12000021221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38673755 + ... + 38988245.

It is an arithmetic number, because the mean of its divisors is an integer number (125564862150).

Almost surely, 2^{12212000021000} is an apocalyptic number.

12212000021000 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 12212000021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16072302355200).

12212000021000 is an abundant number, since it is smaller than the sum of its proper divisors (19932604689400).

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

12212000021000 is a wasteful number, since it uses less digits than its factorization.

12212000021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314657 (or 314643 counting only the distinct ones).

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

Adding to 12212000021000 its reverse (12000021221), we get a palindrome (12224000042221).

The spelling of 12212000021000 in words is "twelve trillion, two hundred twelve billion, twenty-one thousand".