1200022120000 has 560 divisors, whose sum is σ = 3331921443840. Its totient is φ = 425017600000.

The previous prime is 1200022119931. The next prime is 1200022120001. The reversal of 1200022120000 is 212200021.

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

It is not an unprimeable number, because it can be changed into a prime (1200022120001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3342679821 + ... + 3342680179.

Almost surely, 2^{1200022120000} is an apocalyptic number.

1200022120000 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 1200022120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665960721920).

1200022120000 is an abundant number, since it is smaller than the sum of its proper divisors (2131899323840).

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

1200022120000 is a wasteful number, since it uses less digits than its factorization.

1200022120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 555 counting only the distinct ones).

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

Adding to 1200022120000 its reverse (212200021), we get a palindrome (1200234320021).

The spelling of 1200022120000 in words is "one trillion, two hundred billion, twenty-two million, one hundred twenty thousand".