1002111121001 has 8 divisors (see below), whose sum is σ = 1070597899680. Its totient is φ = 935198751168.

The previous prime is 1002111120991. The next prime is 1002111121007. The reversal of 1002111121001 is 1001211112001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002111121001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002111121007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393600896 + ... + 393603441.

It is an arithmetic number, because the mean of its divisors is an integer number (133824737460).

Almost surely, 2^{1002111121001} is an apocalyptic number.

It is an amenable number.

1002111121001 is a deficient number, since it is larger than the sum of its proper divisors (68486778679).

1002111121001 is an equidigital number, since it uses as much as digits as its factorization.

1002111121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787204423.

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

Adding to 1002111121001 its reverse (1001211112001), we get a palindrome (2003322233002).

The spelling of 1002111121001 in words is "one trillion, two billion, one hundred eleven million, one hundred twenty-one thousand, one".