20121012220001 has 32 divisors (see below), whose sum is σ = 25611160780800. Its totient is φ = 15670585669200.

The previous prime is 20121012219967. The next prime is 20121012220007. The reversal of 20121012220001 is 10002221012102.

It is not a de Polignac number, because 20121012220001 - 2⁶ = 20121012219937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20121012220007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5904800 + ... + 8666526.

It is an arithmetic number, because the mean of its divisors is an integer number (800348774400).

Almost surely, 2^{20121012220001} is an apocalyptic number.

It is an amenable number.

20121012220001 is a deficient number, since it is larger than the sum of its proper divisors (5490148560799).

20121012220001 is a wasteful number, since it uses less digits than its factorization.

20121012220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2763690 (or 2763676 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121012220001 its reverse (10002221012102), we get a palindrome (30123233232103).

The spelling of 20121012220001 in words is "twenty trillion, one hundred twenty-one billion, twelve million, two hundred twenty thousand, one".