1001011112020 has 48 divisors (see below), whose sum is σ = 2118983086080. Its totient is φ = 397193981184.

The previous prime is 1001011111993. The next prime is 1001011112033. The reversal of 1001011112020 is 202111101001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1001011111988 and 1001011112006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20318257 + ... + 20367463.

It is an arithmetic number, because the mean of its divisors is an integer number (44145480960).

Almost surely, 2^{1001011112020} is an apocalyptic number.

1001011112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001011112020 is an abundant number, since it is smaller than the sum of its proper divisors (1117971974060).

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

1001011112020 is a wasteful number, since it uses less digits than its factorization.

1001011112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57352 (or 57350 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001011112020 its reverse (202111101001), we get a palindrome (1203122213021).

It can be divided in two parts, 100101 and 1112020, that added together give a palindrome (1212121).

The spelling of 1001011112020 in words is "one trillion, one billion, eleven million, one hundred twelve thousand, twenty".