1002111112021 has 4 divisors (see below), whose sum is σ = 1002114466912. Its totient is φ = 1002107757132.

The previous prime is 1002111112003. The next prime is 1002111112097. The reversal of 1002111112021 is 1202111112001.

It is a happy number.

1002111112021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1002111112021 - 2⁹ = 1002111111509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002111111992 and 1002111112010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002111115021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180275 + ... + 1843168.

It is an arithmetic number, because the mean of its divisors is an integer number (250528616728).

Almost surely, 2^{1002111112021} is an apocalyptic number.

It is an amenable number.

1002111112021 is a deficient number, since it is larger than the sum of its proper divisors (3354891).

1002111112021 is an equidigital number, since it uses as much as digits as its factorization.

1002111112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354890.

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

Adding to 1002111112021 its reverse (1202111112001), we get a palindrome (2204222224022).

The spelling of 1002111112021 in words is "one trillion, two billion, one hundred eleven million, one hundred twelve thousand, twenty-one".