20120102210001 has 4 divisors (see below), whose sum is σ = 26826802946672. Its totient is φ = 13413401473332.

The previous prime is 20120102209993. The next prime is 20120102210009. The reversal of 20120102210001 is 10001220102102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20120102209993) and next prime (20120102210009).

It is not a de Polignac number, because 20120102210001 - 2³ = 20120102209993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120102210009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353350368331 + ... + 3353350368336.

It is an arithmetic number, because the mean of its divisors is an integer number (6706700736668).

Almost surely, 2^{20120102210001} is an apocalyptic number.

It is an amenable number.

20120102210001 is a deficient number, since it is larger than the sum of its proper divisors (6706700736671).

20120102210001 is an equidigital number, since it uses as much as digits as its factorization.

20120102210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706700736670.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20120102210001 its reverse (10001220102102), we get a palindrome (30121322312103).

The spelling of 20120102210001 in words is "twenty trillion, one hundred twenty billion, one hundred two million, two hundred ten thousand, one".