1220000012000 has 192 divisors, whose sum is σ = 3737193707520. Its totient is φ = 380259648000.

The previous prime is 1220000011991. The next prime is 1220000012027. The reversal of 1220000012000 is 2100000221.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1672520 + ... + 2288519.

It is an arithmetic number, because the mean of its divisors is an integer number (19464550560).

Almost surely, 2^{1220000012000} is an apocalyptic number.

1220000012000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220000012000 is an abundant number, since it is smaller than the sum of its proper divisors (2517193695520).

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

1220000012000 is a wasteful number, since it uses less digits than its factorization.

1220000012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961082 (or 3961064 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 1220000012000 its reverse (2100000221), we get a palindrome (1222100012221).

The spelling of 1220000012000 in words is "one trillion, two hundred twenty billion, twelve thousand".