2112100221000 has 256 divisors, whose sum is σ = 8215796459520. Its totient is φ = 438877920000.

The previous prime is 2112100220999. The next prime is 2112100221031. The reversal of 2112100221000 is 1220012112.

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

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, 4340646 + ... + 4802645.

It is an arithmetic number, because the mean of its divisors is an integer number (32092954920).

Almost surely, 2^{2112100221000} is an apocalyptic number.

2112100221000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112100221000 is an abundant number, since it is smaller than the sum of its proper divisors (6103696238520).

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

2112100221000 is a wasteful number, since it uses less digits than its factorization.

2112100221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9143333 (or 9143319 counting only the distinct ones).

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

Adding to 2112100221000 its reverse (1220012112), we get a palindrome (2113320233112).

The spelling of 2112100221000 in words is "two trillion, one hundred twelve billion, one hundred million, two hundred twenty-one thousand".