11200111120121 has 12 divisors (see below), whose sum is σ = 14213128026960. Its totient is φ = 8727359313960.

The previous prime is 11200111120109. The next prime is 11200111120123. The reversal of 11200111120121 is 12102111100211.

It is a de Polignac number, because none of the positive numbers 2^k-11200111120121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200111120096 and 11200111120105.

It is not an unprimeable number, because it can be changed into a prime (11200111120123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10389712931 + ... + 10389714008.

It is an arithmetic number, because the mean of its divisors is an integer number (1184427335580).

Almost surely, 2^{11200111120121} is an apocalyptic number.

11200111120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11200111120121 is a deficient number, since it is larger than the sum of its proper divisors (3013016906839).

11200111120121 is a wasteful number, since it uses less digits than its factorization.

11200111120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20779426964 (or 20779426957 counting only the distinct ones).

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

Adding to 11200111120121 its reverse (12102111100211), we get a palindrome (23302222220332).

The spelling of 11200111120121 in words is "eleven trillion, two hundred billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty-one".