12120022000 has 120 divisors (see below), whose sum is σ = 29712442032. Its totient is φ = 4781712000.

The previous prime is 12120021941. The next prime is 12120022001. The reversal of 12120022000 is 22002121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120022001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12481515 + ... + 12482485.

Almost surely, 2^12120022000 is an apocalyptic number.

12120022000 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 12120022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14856221016).

12120022000 is an abundant number, since it is smaller than the sum of its proper divisors (17592420032).

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

12120022000 is an frugal number, since it uses more digits than its factorization.

12120022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12120022000 its reverse (22002121), we get a palindrome (12142024121).

The spelling of 12120022000 in words is "twelve billion, one hundred twenty million, twenty-two thousand".