20201212020001 has 4 divisors (see below), whose sum is σ = 21079525586112. Its totient is φ = 19322898453892.

The previous prime is 20201212019983. The next prime is 20201212020019. The reversal of 20201212020001 is 10002021210202.

It is a happy number.

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 (20201212019983) and next prime (20201212020019).

It is a cyclic number.

It is not a de Polignac number, because 20201212020001 - 2⁹ = 20201212019489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201212020061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439156783021 + ... + 439156783066.

It is an arithmetic number, because the mean of its divisors is an integer number (5269881396528).

Almost surely, 2^{20201212020001} is an apocalyptic number.

It is an amenable number.

20201212020001 is a deficient number, since it is larger than the sum of its proper divisors (878313566111).

20201212020001 is an equidigital number, since it uses as much as digits as its factorization.

20201212020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878313566110.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20201212020001 its reverse (10002021210202), we get a palindrome (30203233230203).

The spelling of 20201212020001 in words is "twenty trillion, two hundred one billion, two hundred twelve million, twenty thousand, one".