1020120110000 has 100 divisors (see below), whose sum is σ = 2473992125352. Its totient is φ = 407357568000.

The previous prime is 1020120109979. The next prime is 1020120110069. The reversal of 1020120110000 is 110210201.

It is a tau number, because it is divible by the number of its divisors (100).

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 1020120110000.

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, 5843987 + ... + 6016013.

Almost surely, 2^{1020120110000} is an apocalyptic number.

1020120110000 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 1020120110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236996062676).

1020120110000 is an abundant number, since it is smaller than the sum of its proper divisors (1453872015352).

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

1020120110000 is an equidigital number, since it uses as much as digits as its factorization.

1020120110000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172648 (or 172627 counting only the distinct ones).

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

Adding to 1020120110000 its reverse (110210201), we get a palindrome (1020230320201).

It can be divided in two parts, 10201201 and 10000, that added together give a palindrome (10211201).

The spelling of 1020120110000 in words is "one trillion, twenty billion, one hundred twenty million, one hundred ten thousand".