2120000111111 has 2 divisors, whose sum is σ = 2120000111112. Its totient is φ = 2120000111110.

The previous prime is 2120000111087. The next prime is 2120000111189. The reversal of 2120000111111 is 1111110000212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120000111111 - 2²² = 2119995916807 is a prime.

It is a super-2 number, since 2×2120000111111² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120000111092 and 2120000111101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120000117111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060000055555 + 1060000055556.

It is an arithmetic number, because the mean of its divisors is an integer number (1060000055556).

Almost surely, 2^{2120000111111} is an apocalyptic number.

2120000111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120000111111 is an equidigital number, since it uses as much as digits as its factorization.

2120000111111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2120000111111 its reverse (1111110000212), we get a palindrome (3231110111323).

The spelling of 2120000111111 in words is "two trillion, one hundred twenty billion, one hundred eleven thousand, one hundred eleven".