1012011031020 has 96 divisors (see below), whose sum is σ = 3091500115200. Its totient is φ = 245314863360.

The previous prime is 1012011031013. The next prime is 1012011031043. The reversal of 1012011031020 is 201301102101.

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 = 1012011030987 and 1012011031005.

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, 8423331 + ... + 8542629.

It is an arithmetic number, because the mean of its divisors is an integer number (32203126200).

Almost surely, 2^{1012011031020} is an apocalyptic number.

1012011031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012011031020 is an abundant number, since it is smaller than the sum of its proper divisors (2079489084180).

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

1012011031020 is a wasteful number, since it uses less digits than its factorization.

1012011031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132175 (or 132173 counting only the distinct ones).

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

Adding to 1012011031020 its reverse (201301102101), we get a palindrome (1213312133121).

The spelling of 1012011031020 in words is "one trillion, twelve billion, eleven million, thirty-one thousand, twenty".