1212100030001 has 8 divisors (see below), whose sum is σ = 1385415906624. Its totient is φ = 1038823835760.

The previous prime is 1212100029997. The next prime is 1212100030003. The reversal of 1212100030001 is 1000300012121.

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 1212100030001 - 2² = 1212100029997 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 (1212100030003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9855110 + ... + 9977343.

It is an arithmetic number, because the mean of its divisors is an integer number (173176988328).

Almost surely, 2^{1212100030001} is an apocalyptic number.

It is an amenable number.

1212100030001 is a deficient number, since it is larger than the sum of its proper divisors (173315876623).

1212100030001 is an equidigital number, since it uses as much as digits as its factorization.

1212100030001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19841191.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 1212100030001 its reverse (1000300012121), we get a palindrome (2212400042122).

The spelling of 1212100030001 in words is "one trillion, two hundred twelve billion, one hundred million, thirty thousand, one".