1012011112020 has 96 divisors (see below), whose sum is σ = 2903730762240. Its totient is φ = 263211661440.

The previous prime is 1012011112001. The next prime is 1012011112043. The reversal of 1012011112020 is 202111102101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1012011111987 and 1012011112005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1498951 + ... + 2066609.

It is an arithmetic number, because the mean of its divisors is an integer number (30247195440).

Almost surely, 2^{1012011112020} is an apocalyptic number.

1012011112020 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 1012011112020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451865381120).

1012011112020 is an abundant number, since it is smaller than the sum of its proper divisors (1891719650220).

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

1012011112020 is a wasteful number, since it uses less digits than its factorization.

1012011112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568405 (or 568403 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1012011112020 its reverse (202111102101), we get a palindrome (1214122214121).

The spelling of 1012011112020 in words is "one trillion, twelve billion, eleven million, one hundred twelve thousand, twenty".