1011001001012 has 24 divisors (see below), whose sum is σ = 1808956015104. Its totient is φ = 494180956512.

The previous prime is 1011001000973. The next prime is 1011001001029. The reversal of 1011001001012 is 2101001001101.

It is a happy number.

It is a congruent number.

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, 2901068 + ... + 3230819.

It is an arithmetic number, because the mean of its divisors is an integer number (75373167296).

Almost surely, 2^{1011001001012} is an apocalyptic number.

It is an amenable number.

1011001001012 is a deficient number, since it is larger than the sum of its proper divisors (797955014092).

1011001001012 is a wasteful number, since it uses less digits than its factorization.

1011001001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132815 (or 6132813 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1011001001012 its reverse (2101001001101), we get a palindrome (3112002002113).

The spelling of 1011001001012 in words is "one trillion, eleven billion, one million, one thousand, twelve".