12001212210 has 96 divisors (see below), whose sum is σ = 31272023808. Its totient is φ = 2946278400.

The previous prime is 12001212143. The next prime is 12001212211. The reversal of 12001212210 is 1221210021.

It is not an unprimeable number, because it can be changed into a prime (12001212211) 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, 2030119 + ... + 2036021.

It is an arithmetic number, because the mean of its divisors is an integer number (325750248).

Almost surely, 2^12001212210 is an apocalyptic number.

12001212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12001212210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15636011904).

12001212210 is an abundant number, since it is smaller than the sum of its proper divisors (19270811598).

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

12001212210 is a wasteful number, since it uses less digits than its factorization.

12001212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6340 (or 6327 counting only the distinct ones).

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

Adding to 12001212210 its reverse (1221210021), we get a palindrome (13222422231).

The spelling of 12001212210 in words is "twelve billion, one million, two hundred twelve thousand, two hundred ten".