1211002200111 has 8 divisors (see below), whose sum is σ = 1761457745664. Its totient is φ = 733940727320.

The previous prime is 1211002199999. The next prime is 1211002200127. The reversal of 1211002200111 is 1110022001121.

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 1211002200111 - 2²⁷ = 1210867982383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211002201111) 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, 18348518151 + ... + 18348518216.

It is an arithmetic number, because the mean of its divisors is an integer number (220182218208).

Almost surely, 2^{1211002200111} is an apocalyptic number.

1211002200111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1211002200111 is a deficient number, since it is larger than the sum of its proper divisors (550455545553).

1211002200111 is a wasteful number, since it uses less digits than its factorization.

1211002200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36697036381.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1211002200111 its reverse (1110022001121), we get a palindrome (2321024201232).

It can be divided in two parts, 1 and 211002200111, that added together give a palindrome (211002200112).

The spelling of 1211002200111 in words is "one trillion, two hundred eleven billion, two million, two hundred thousand, one hundred eleven".