1002111110021 has 8 divisors (see below), whose sum is σ = 1145285932224. Its totient is φ = 858940310880.

The previous prime is 1002111109927. The next prime is 1002111110023. The reversal of 1002111110021 is 1200111112001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002111110021 - 2²² = 1002106915717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002111109984 and 1002111110011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002111110023) by changing a digit.

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, 451640 + ... + 1486001.

It is an arithmetic number, because the mean of its divisors is an integer number (143160741528).

Almost surely, 2^{1002111110021} is an apocalyptic number.

It is an amenable number.

1002111110021 is a deficient number, since it is larger than the sum of its proper divisors (143174822203).

1002111110021 is an equidigital number, since it uses as much as digits as its factorization.

1002111110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011531.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1002111110021 its reverse (1200111112001), we get a palindrome (2202222222022).

The spelling of 1002111110021 in words is "one trillion, two billion, one hundred eleven million, one hundred ten thousand, twenty-one".