1210001120000 has 180 divisors, whose sum is σ = 3025029961800. Its totient is φ = 482893824000.

The previous prime is 1210001119991. The next prime is 1210001120017. The reversal of 1210001120000 is 211000121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1210001120000.

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, 71831579 + ... + 71848421.

It is an arithmetic number, because the mean of its divisors is an integer number (16805722010).

Almost surely, 2^{1210001120000} is an apocalyptic number.

1210001120000 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 1210001120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1512514980900).

1210001120000 is an abundant number, since it is smaller than the sum of its proper divisors (1815028841800).

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

1210001120000 is an frugal number, since it uses more digits than its factorization.

1210001120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17328 (or 17299 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1210001120000 its reverse (211000121), we get a palindrome (1210212120121).

The spelling of 1210001120000 in words is "one trillion, two hundred ten billion, one million, one hundred twenty thousand".