2120111001121 has 2 divisors, whose sum is σ = 2120111001122. Its totient is φ = 2120111001120.

The previous prime is 2120111001103. The next prime is 2120111001143. The reversal of 2120111001121 is 1211001110212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1710696580096 + 409414421025 = 1307936^2 + 639855^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120111001121 - 2⁷ = 2120111000993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120111001181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060055500560 + 1060055500561.

It is an arithmetic number, because the mean of its divisors is an integer number (1060055500561).

Almost surely, 2^{2120111001121} is an apocalyptic number.

It is an amenable number.

2120111001121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120111001121 is an equidigital number, since it uses as much as digits as its factorization.

2120111001121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2120111001121 its reverse (1211001110212), we get a palindrome (3331112111333).

The spelling of 2120111001121 in words is "two trillion, one hundred twenty billion, one hundred eleven million, one thousand, one hundred twenty-one".