2011211122123 has 32 divisors (see below), whose sum is σ = 2406515539968. Its totient is φ = 1644498525600.

The previous prime is 2011211122099. The next prime is 2011211122127. The reversal of 2011211122123 is 3212211121102.

It is not a de Polignac number, because 2011211122123 - 2⁵ = 2011211122091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011211122123.

It is not an unprimeable number, because it can be changed into a prime (2011211122127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155095786 + ... + 155108752.

It is an arithmetic number, because the mean of its divisors is an integer number (75203610624).

Almost surely, 2^{2011211122123} is an apocalyptic number.

2011211122123 is a deficient number, since it is larger than the sum of its proper divisors (395304417845).

2011211122123 is a wasteful number, since it uses less digits than its factorization.

2011211122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23143.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2011211122123 its reverse (3212211121102), we get a palindrome (5223422243225).

The spelling of 2011211122123 in words is "two trillion, eleven billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-three".