10121210221200 has 480 divisors, whose sum is σ = 36773463014400. Its totient is φ = 2358951413760.

The previous prime is 10121210221183. The next prime is 10121210221201. The reversal of 10121210221200 is 212201212101.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10121210221200.

It is not an unprimeable number, because it can be changed into a prime (10121210221201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 604351227 + ... + 604367973.

It is an arithmetic number, because the mean of its divisors is an integer number (76611381280).

Almost surely, 2^{10121210221200} is an apocalyptic number.

10121210221200 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 10121210221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18386731507200).

10121210221200 is an abundant number, since it is smaller than the sum of its proper divisors (26652252793200).

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

10121210221200 is a wasteful number, since it uses less digits than its factorization.

10121210221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18839 (or 18828 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10121210221200 its reverse (212201212101), we get a palindrome (10333411433301).

Subtracting from 10121210221200 its reverse (212201212101), we obtain a palindrome (9909009009099).

The spelling of 10121210221200 in words is "ten trillion, one hundred twenty-one billion, two hundred ten million, two hundred twenty-one thousand, two hundred".