2111212120011 has 8 divisors (see below), whose sum is σ = 2963104729920. Its totient is φ = 1333397128392.

The previous prime is 2111212120009. The next prime is 2111212120037. The reversal of 2111212120011 is 1100212121112.

It is a happy number.

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

It is not a de Polignac number, because 2111212120011 - 2¹ = 2111212120009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111212120711) 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 7 ways as a sum of consecutive naturals, for example, 18519404505 + ... + 18519404618.

It is an arithmetic number, because the mean of its divisors is an integer number (370388091240).

Almost surely, 2^{2111212120011} is an apocalyptic number.

2111212120011 is a deficient number, since it is larger than the sum of its proper divisors (851892609909).

2111212120011 is a wasteful number, since it uses less digits than its factorization.

2111212120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37038809145.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2111212120011 its reverse (1100212121112), we get a palindrome (3211424241123).

The spelling of 2111212120011 in words is "two trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty thousand, eleven".