1212200021001 has 8 divisors (see below), whose sum is σ = 1632929238304. Its totient is φ = 799802075520.

The previous prime is 1212200020963. The next prime is 1212200021027. The reversal of 1212200021001 is 1001200022121.

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

It is not a de Polignac number, because 1212200021001 - 2⁶ = 1212200020937 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 (1212200021101) 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, 2082817615 + ... + 2082818196.

It is an arithmetic number, because the mean of its divisors is an integer number (204116154788).

Almost surely, 2^{1212200021001} is an apocalyptic number.

It is an amenable number.

1212200021001 is a deficient number, since it is larger than the sum of its proper divisors (420729217303).

1212200021001 is an equidigital number, since it uses as much as digits as its factorization.

1212200021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4165635911.

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

Adding to 1212200021001 its reverse (1001200022121), we get a palindrome (2213400043122).

The spelling of 1212200021001 in words is "one trillion, two hundred twelve billion, two hundred million, twenty-one thousand, one".