2123210011 has 16 divisors (see below), whose sum is σ = 2363890144. Its totient is φ = 1894523904.

The previous prime is 2123209987. The next prime is 2123210039. The reversal of 2123210011 is 1100123212.

It is not a de Polignac number, because 2123210011 - 2¹³ = 2123201819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123209973 and 2123210000.

It is not an unprimeable number, because it can be changed into a prime (2123210041) 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, 34645 + ... + 73801.

It is an arithmetic number, because the mean of its divisors is an integer number (147743134).

Almost surely, 2^2123210011 is an apocalyptic number.

2123210011 is a deficient number, since it is larger than the sum of its proper divisors (240680133).

2123210011 is a wasteful number, since it uses less digits than its factorization.

2123210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39310.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2123210011 is about 46078.3030395001. The cubic root of 2123210011 is about 1285.2797083731.

Adding to 2123210011 its reverse (1100123212), we get a palindrome (3223333223).

The spelling of 2123210011 in words is "two billion, one hundred twenty-three million, two hundred ten thousand, eleven".