12121102220000 has 120 divisors (see below), whose sum is σ = 29822155974072. Its totient is φ = 4848046400000.

The previous prime is 12121102219957. The next prime is 12121102220039. The reversal of 12121102220000 is 2220112121.

It is a super-2 number, since 2×12121102220000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 465806990 + ... + 465833010.

Almost surely, 2^{12121102220000} is an apocalyptic number.

12121102220000 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 12121102220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14911077987036).

12121102220000 is an abundant number, since it is smaller than the sum of its proper divisors (17701053754072).

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

12121102220000 is an equidigital number, since it uses as much as digits as its factorization.

12121102220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49342 (or 49319 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12121102220000 its reverse (2220112121), we get a palindrome (12123322332121).

The spelling of 12121102220000 in words is "twelve trillion, one hundred twenty-one billion, one hundred two million, two hundred twenty thousand".