1212100201001 has 8 divisors (see below), whose sum is σ = 1227667543680. Its totient is φ = 1196538466032.

The previous prime is 1212100200947. The next prime is 1212100201021. The reversal of 1212100201001 is 1001020012121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212100201001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212100201021) 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 7 ways as a sum of consecutive naturals, for example, 965990 + ... + 1832303.

It is an arithmetic number, because the mean of its divisors is an integer number (153458442960).

Almost surely, 2^{1212100201001} is an apocalyptic number.

It is an amenable number.

1212100201001 is a deficient number, since it is larger than the sum of its proper divisors (15567342679).

1212100201001 is an equidigital number, since it uses as much as digits as its factorization.

1212100201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803855.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1212100201001 its reverse (1001020012121), we get a palindrome (2213120213122).

The spelling of 1212100201001 in words is "one trillion, two hundred twelve billion, one hundred million, two hundred one thousand, one".