1001212110211 has 4 divisors (see below), whose sum is σ = 1006454058624. Its totient is φ = 995970161800.

The previous prime is 1001212110191. The next prime is 1001212110253. The reversal of 1001212110211 is 1120112121001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001212110211 - 2¹¹ = 1001212108163 is a prime.

It is a super-2 number, since 2×1001212110211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001212110191 and 1001212110200.

It is not an unprimeable number, because it can be changed into a prime (1001212110281) 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, 2620973920 + ... + 2620974301.

It is an arithmetic number, because the mean of its divisors is an integer number (251613514656).

Almost surely, 2^{1001212110211} is an apocalyptic number.

1001212110211 is a deficient number, since it is larger than the sum of its proper divisors (5241948413).

1001212110211 is an equidigital number, since it uses as much as digits as its factorization.

1001212110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241948412.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1001212110211 its reverse (1120112121001), we get a palindrome (2121324231212).

It can be divided in two parts, 1001 and 212110211, that added together give a palindrome (212111212).

The spelling of 1001212110211 in words is "one trillion, one billion, two hundred twelve million, one hundred ten thousand, two hundred eleven".