20121402233201 has 4 divisors (see below), whose sum is σ = 20121411893412. Its totient is φ = 20121392572992.

The previous prime is 20121402233147. The next prime is 20121402233221. The reversal of 20121402233201 is 10233220412102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4179142047025 + 15942260186176 = 2044295^2 + 3992776^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121402233201 - 2²² = 20121398038897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121402233221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271796 + ... + 6349541.

It is an arithmetic number, because the mean of its divisors is an integer number (5030352973353).

Almost surely, 2^{20121402233201} is an apocalyptic number.

It is an amenable number.

20121402233201 is a deficient number, since it is larger than the sum of its proper divisors (9660211).

20121402233201 is an equidigital number, since it uses as much as digits as its factorization.

20121402233201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9660210.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20121402233201 its reverse (10233220412102), we get a palindrome (30354622645303).

The spelling of 20121402233201 in words is "twenty trillion, one hundred twenty-one billion, four hundred two million, two hundred thirty-three thousand, two hundred one".