1001211210001 has 8 divisors (see below), whose sum is σ = 1005397119584. Its totient is φ = 997025561280.

The previous prime is 1001211209983. The next prime is 1001211210053. The reversal of 1001211210001 is 1000121121001.

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 1001211210001 - 2¹⁵ = 1001211177233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001211210001.

It is not an unprimeable number, because it can be changed into a prime (1001211210101) 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, 13455766 + ... + 13529968.

It is an arithmetic number, because the mean of its divisors is an integer number (125674639948).

Almost surely, 2^{1001211210001} is an apocalyptic number.

It is an amenable number.

1001211210001 is a deficient number, since it is larger than the sum of its proper divisors (4185909583).

1001211210001 is an equidigital number, since it uses as much as digits as its factorization.

1001211210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130431.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1001211210001 its reverse (1000121121001), we get a palindrome (2001332331002).

It can be divided in two parts, 100121121000 and 1, that added together give a palindrome (100121121001).

The spelling of 1001211210001 in words is "one trillion, one billion, two hundred eleven million, two hundred ten thousand, one".