20012112020001 has 4 divisors (see below), whose sum is σ = 26682816026672. Its totient is φ = 13341408013332.

The previous prime is 20012112019987. The next prime is 20012112020063. The reversal of 20012112020001 is 10002021121002.

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 not a de Polignac number, because 20012112020001 - 2⁹ = 20012112019489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012112020081) 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, 3335352003331 + ... + 3335352003336.

It is an arithmetic number, because the mean of its divisors is an integer number (6670704006668).

Almost surely, 2^{20012112020001} is an apocalyptic number.

It is an amenable number.

20012112020001 is a deficient number, since it is larger than the sum of its proper divisors (6670704006671).

20012112020001 is an equidigital number, since it uses as much as digits as its factorization.

20012112020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670704006670.

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

Adding to 20012112020001 its reverse (10002021121002), we get a palindrome (30014133141003).

The spelling of 20012112020001 in words is "twenty trillion, twelve billion, one hundred twelve million, twenty thousand, one".