1002021112111 has 24 divisors (see below), whose sum is σ = 1095537080448. Its totient is φ = 915388992000.

The previous prime is 1002021112007. The next prime is 1002021112133. The reversal of 1002021112111 is 1112111202001.

It is a happy number.

It is not a de Polignac number, because 1002021112111 - 2⁹ = 1002021111599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002021112091 and 1002021112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002021112711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2985351 + ... + 3303991.

It is an arithmetic number, because the mean of its divisors is an integer number (45647378352).

Almost surely, 2^{1002021112111} is an apocalyptic number.

1002021112111 is a deficient number, since it is larger than the sum of its proper divisors (93515968337).

1002021112111 is a wasteful number, since it uses less digits than its factorization.

1002021112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318991 (or 318972 counting only the distinct ones).

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

Adding to 1002021112111 its reverse (1112111202001), we get a palindrome (2114132314112).

The spelling of 1002021112111 in words is "one trillion, two billion, twenty-one million, one hundred twelve thousand, one hundred eleven".