20121102220001 has 8 divisors (see below), whose sum is σ = 20174422156200. Its totient is φ = 20067790462720.

The previous prime is 20121102219947. The next prime is 20121102220039. The reversal of 20121102220001 is 10002220112102.

It can be written as a sum of positive squares in 4 ways, for example, as 1273139872225 + 18847962347776 = 1128335^2 + 4341424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20121102220001 - 2¹⁴ = 20121102203617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121102220801) 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 7 ways as a sum of consecutive naturals, for example, 2897831 + ... + 6974211.

It is an arithmetic number, because the mean of its divisors is an integer number (2521802769525).

Almost surely, 2^{20121102220001} is an apocalyptic number.

It is an amenable number.

20121102220001 is a deficient number, since it is larger than the sum of its proper divisors (53319936199).

20121102220001 is a wasteful number, since it uses less digits than its factorization.

20121102220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089459.

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

Adding to 20121102220001 its reverse (10002220112102), we get a palindrome (30123322332103).

The spelling of 20121102220001 in words is "twenty trillion, one hundred twenty-one billion, one hundred two million, two hundred twenty thousand, one".