2112021111011 has 4 divisors (see below), whose sum is σ = 2413738412592. Its totient is φ = 1810303809432.

The previous prime is 2112021110977. The next prime is 2112021111019. The reversal of 2112021111011 is 1101111202112.

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 2112021111011 - 2²² = 2112016916707 is a prime.

It is a super-2 number, since 2×2112021111011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112021111019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150858650780 + ... + 150858650793.

It is an arithmetic number, because the mean of its divisors is an integer number (603434603148).

Almost surely, 2^{2112021111011} is an apocalyptic number.

2112021111011 is a deficient number, since it is larger than the sum of its proper divisors (301717301581).

2112021111011 is an equidigital number, since it uses as much as digits as its factorization.

2112021111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301717301580.

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

Adding to 2112021111011 its reverse (1101111202112), we get a palindrome (3213132313123).

The spelling of 2112021111011 in words is "two trillion, one hundred twelve billion, twenty-one million, one hundred eleven thousand, eleven".