1002111121012 has 24 divisors (see below), whose sum is σ = 1775583482400. Its totient is φ = 494806726176.

The previous prime is 1002111121007. The next prime is 1002111121031. The reversal of 1002111121012 is 2101211112001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1002111120983 and 1002111121001.

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, 131314 + ... + 1421782.

It is an arithmetic number, because the mean of its divisors is an integer number (73982645100).

Almost surely, 2^{1002111121012} is an apocalyptic number.

It is an amenable number.

1002111121012 is a deficient number, since it is larger than the sum of its proper divisors (773472361388).

1002111121012 is a wasteful number, since it uses less digits than its factorization.

1002111121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292895 (or 1292893 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1002111121012 its reverse (2101211112001), we get a palindrome (3103322233013).

The spelling of 1002111121012 in words is "one trillion, two billion, one hundred eleven million, one hundred twenty-one thousand, twelve".