1001012021012 has 24 divisors (see below), whose sum is σ = 1753248895104. Its totient is φ = 500083876512.

The previous prime is 1001012020999. The next prime is 1001012021021. The reversal of 1001012021012 is 2101202101001.

It is a junction number, because it is equal to n+sod(n) for n = 1001012020984 and 1001012021002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71052233 + ... + 71066319.

It is an arithmetic number, because the mean of its divisors is an integer number (73052037296).

Almost surely, 2^{1001012021012} is an apocalyptic number.

It is an amenable number.

1001012021012 is a deficient number, since it is larger than the sum of its proper divisors (752236874092).

1001012021012 is a wasteful number, since it uses less digits than its factorization.

1001012021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27815 (or 27813 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001012021012 its reverse (2101202101001), we get a palindrome (3102214122013).

The spelling of 1001012021012 in words is "one trillion, one billion, twelve million, twenty-one thousand, twelve".