1002111211211 has 4 divisors (see below), whose sum is σ = 1093212230424. Its totient is φ = 911010192000.

The previous prime is 1002111211207. The next prime is 1002111211217. The reversal of 1002111211211 is 1121121112001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002111211211 - 2² = 1002111211207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002111211217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45550509590 + ... + 45550509611.

It is an arithmetic number, because the mean of its divisors is an integer number (273303057606).

Almost surely, 2^{1002111211211} is an apocalyptic number.

1002111211211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1002111211211 is a deficient number, since it is larger than the sum of its proper divisors (91101019213).

1002111211211 is an equidigital number, since it uses as much as digits as its factorization.

1002111211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91101019212.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1002111211211 its reverse (1121121112001), we get a palindrome (2123232323212).

The spelling of 1002111211211 in words is "one trillion, two billion, one hundred eleven million, two hundred eleven thousand, two hundred eleven".