1020001111012 has 24 divisors (see below), whose sum is σ = 1922567204600. Its totient is φ = 470706702336.

The previous prime is 1020001110917. The next prime is 1020001111027. The reversal of 1020001111012 is 2101111000201.

It can be written as a sum of positive squares in 4 ways, for example, as 25880443876 + 994120667136 = 160874^2 + 997056^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1020001111012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920187 + ... + 1699042.

Almost surely, 2^{1020001111012} is an apocalyptic number.

It is an amenable number.

1020001111012 is a deficient number, since it is larger than the sum of its proper divisors (902566093588).

1020001111012 is a wasteful number, since it uses less digits than its factorization.

1020001111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626735 (or 2626733 counting only the distinct ones).

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

Adding to 1020001111012 its reverse (2101111000201), we get a palindrome (3121112111213).

The spelling of 1020001111012 in words is "one trillion, twenty billion, one million, one hundred eleven thousand, twelve".