2120123011 has 2 divisors, whose sum is σ = 2120123012. Its totient is φ = 2120123010.

The previous prime is 2120122951. The next prime is 2120123069. The reversal of 2120123011 is 1103210212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120123011 - 2⁷ = 2120122883 is a prime.

It is a super-2 number, since 2×2120123011² = 8989843163543412242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120122982 and 2120123000.

It is not a weakly prime, because it can be changed into another prime (2120123081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060061505 + 1060061506.

It is an arithmetic number, because the mean of its divisors is an integer number (1060061506).

Almost surely, 2^2120123011 is an apocalyptic number.

2120123011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120123011 is an equidigital number, since it uses as much as digits as its factorization.

2120123011 is an evil number, because the sum of its binary digits is even.

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

The square root of 2120123011 is about 46044.7935276074. The cubic root of 2120123011 is about 1284.6565037453.

Adding to 2120123011 its reverse (1103210212), we get a palindrome (3223333223).

The spelling of 2120123011 in words is "two billion, one hundred twenty million, one hundred twenty-three thousand, eleven".