12101011210001 has 12 divisors (see below), whose sum is σ = 14076843171300. Its totient is φ = 10372179888000.

The previous prime is 12101011209997. The next prime is 12101011210021. The reversal of 12101011210001 is 10001211010121.

It can be written as a sum of positive squares in 2 ways, for example, as 8373794850001 + 3727216360000 = 2893751^2 + 1930600^2 .

It is not a de Polignac number, because 12101011210001 - 2² = 12101011209997 is a prime.

It is a super-2 number, since 2×12101011210001² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12101011210021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3229325 + ... + 5884773.

It is an arithmetic number, because the mean of its divisors is an integer number (1173070264275).

Almost surely, 2^{12101011210001} is an apocalyptic number.

It is an amenable number.

12101011210001 is a deficient number, since it is larger than the sum of its proper divisors (1975831961299).

12101011210001 is an equidigital number, since it uses as much as digits as its factorization.

12101011210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748464 (or 2748457 counting only the distinct ones).

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

Adding to 12101011210001 its reverse (10001211010121), we get a palindrome (22102222220122).

The spelling of 12101011210001 in words is "twelve trillion, one hundred one billion, eleven million, two hundred ten thousand, one".