2111101121121 has 4 divisors (see below), whose sum is σ = 2814801494832. Its totient is φ = 1407400747412.

The previous prime is 2111101121117. The next prime is 2111101121123. The reversal of 2111101121121 is 1211211011112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2111101121121 - 2² = 2111101121117 is a prime.

It is a super-2 number, since 2×2111101121121² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2111101121121.

It is not an unprimeable number, because it can be changed into a prime (2111101121123) 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, 351850186851 + ... + 351850186856.

It is an arithmetic number, because the mean of its divisors is an integer number (703700373708).

Almost surely, 2^{2111101121121} is an apocalyptic number.

It is an amenable number.

2111101121121 is a deficient number, since it is larger than the sum of its proper divisors (703700373711).

2111101121121 is an equidigital number, since it uses as much as digits as its factorization.

2111101121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703700373710.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 2111101121121 its reverse (1211211011112), we get a palindrome (3322312132233).

The spelling of 2111101121121 in words is "two trillion, one hundred eleven billion, one hundred one million, one hundred twenty-one thousand, one hundred twenty-one".