1020111110000 has 300 divisors, whose sum is σ = 2579751583992. Its totient is φ = 390600000000.

The previous prime is 1020111109993. The next prime is 1020111110003. The reversal of 1020111110000 is 111110201.

It is a happy number.

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 1020111110000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020111110003) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 970609475 + ... + 970610525.

Almost surely, 2^{1020111110000} is an apocalyptic number.

1020111110000 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 1020111110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1289875791996).

1020111110000 is an abundant number, since it is smaller than the sum of its proper divisors (1559640473992).

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

1020111110000 is a wasteful number, since it uses less digits than its factorization.

1020111110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1020111110000 its reverse (111110201), we get a palindrome (1020222220201).

The spelling of 1020111110000 in words is "one trillion, twenty billion, one hundred eleven million, one hundred ten thousand".