1021012034004 has 72 divisors (see below), whose sum is σ = 2733037070400. Its totient is φ = 320279008512.

The previous prime is 1021012033973. The next prime is 1021012034027. The reversal of 1021012034004 is 4004302101201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5227897 + ... + 5419679.

It is an arithmetic number, because the mean of its divisors is an integer number (37958848200).

Almost surely, 2^{1021012034004} is an apocalyptic number.

It is an amenable number.

1021012034004 is an abundant number, since it is smaller than the sum of its proper divisors (1712025036396).

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

1021012034004 is a wasteful number, since it uses less digits than its factorization.

1021012034004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200509 (or 200504 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1021012034004 its reverse (4004302101201), we get a palindrome (5025314135205).

The spelling of 1021012034004 in words is "one trillion, twenty-one billion, twelve million, thirty-four thousand, four".