12001220100031 has 2 divisors, whose sum is σ = 12001220100032. Its totient is φ = 12001220100030.

The previous prime is 12001220100011. The next prime is 12001220100073. The reversal of 12001220100031 is 13000102210021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001220100031 - 2⁷ = 12001220099903 is a prime.

It is a super-2 number, since 2×12001220100031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001220099984 and 12001220100020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001220100011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000610050015 + 6000610050016.

It is an arithmetic number, because the mean of its divisors is an integer number (6000610050016).

Almost surely, 2^{12001220100031} is an apocalyptic number.

12001220100031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001220100031 is an equidigital number, since it uses as much as digits as its factorization.

12001220100031 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.

Adding to 12001220100031 its reverse (13000102210021), we get a palindrome (25001322310052).

The spelling of 12001220100031 in words is "twelve trillion, one billion, two hundred twenty million, one hundred thousand, thirty-one".