2111021121111 has 8 divisors (see below), whose sum is σ = 3216794089344. Its totient is φ = 1206297783480.

The previous prime is 2111021121091. The next prime is 2111021121203. The reversal of 2111021121111 is 1111211201112.

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

It is not a de Polignac number, because 2111021121111 - 2⁹ = 2111021120599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111021120111) 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, 50262407625 + ... + 50262407666.

It is an arithmetic number, because the mean of its divisors is an integer number (402099261168).

Almost surely, 2^{2111021121111} is an apocalyptic number.

2111021121111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2111021121111 is a deficient number, since it is larger than the sum of its proper divisors (1105772968233).

2111021121111 is a wasteful number, since it uses less digits than its factorization.

2111021121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100524815301.

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

Adding to 2111021121111 its reverse (1111211201112), we get a palindrome (3222232322223).

The spelling of 2111021121111 in words is "two trillion, one hundred eleven billion, twenty-one million, one hundred twenty-one thousand, one hundred eleven".