12020001121 has 2 divisors, whose sum is σ = 12020001122. Its totient is φ = 12020001120.

The previous prime is 12020001109. The next prime is 12020001131. The reversal of 12020001121 is 12110002021.

It is an a-pointer prime, because the next prime (12020001131) can be obtained adding 12020001121 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12008872225 + 11128896 = 109585^2 + 3336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020001121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020001098 and 12020001107.

It is not a weakly prime, because it can be changed into another prime (12020001131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010000560 + 6010000561.

It is an arithmetic number, because the mean of its divisors is an integer number (6010000561).

Almost surely, 2^12020001121 is an apocalyptic number.

It is an amenable number.

12020001121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020001121 is an equidigital number, since it uses as much as digits as its factorization.

12020001121 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 10.

Adding to 12020001121 its reverse (12110002021), we get a palindrome (24130003142).

The spelling of 12020001121 in words is "twelve billion, twenty million, one thousand, one hundred twenty-one".