12210021210100 has 144 divisors (see below), whose sum is σ = 30431219082880. Its totient is φ = 4165514035200.

The previous prime is 12210021210083. The next prime is 12210021210103. The reversal of 12210021210100 is 101212001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210021210103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1077761236 + ... + 1077772564.

Almost surely, 2^{12210021210100} is an apocalyptic number.

12210021210100 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 12210021210100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15215609541440).

12210021210100 is an abundant number, since it is smaller than the sum of its proper divisors (18221197872780).

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

12210021210100 is a wasteful number, since it uses less digits than its factorization.

12210021210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18858 (or 18851 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12210021210100 its reverse (101212001221), we get a palindrome (12311233211321).

The spelling of 12210021210100 in words is "twelve trillion, two hundred ten billion, twenty-one million, two hundred ten thousand, one hundred".