2123311011 has 16 divisors (see below), whose sum is σ = 2865379968. Its totient is φ = 1398488000.

The previous prime is 2123310991. The next prime is 2123311031. The reversal of 2123311011 is 1101133212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2123310991) and next prime (2123311031).

It is a cyclic number.

It is not a de Polignac number, because 2123311011 - 2⁷ = 2123310883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123311031) 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 15 ways as a sum of consecutive naturals, for example, 77311 + ... + 101111.

It is an arithmetic number, because the mean of its divisors is an integer number (179086248).

Almost surely, 2^2123311011 is an apocalyptic number.

2123311011 is a deficient number, since it is larger than the sum of its proper divisors (742068957).

2123311011 is a wasteful number, since it uses less digits than its factorization.

2123311011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24162.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2123311011 is about 46079.3989869660. The cubic root of 2123311011 is about 1285.3000880799.

Adding to 2123311011 its reverse (1101133212), we get a palindrome (3224444223).

The spelling of 2123311011 in words is "two billion, one hundred twenty-three million, three hundred eleven thousand, eleven".