1001011212211 has 8 divisors (see below), whose sum is σ = 1065815424720. Its totient is φ = 936864910848.

The previous prime is 1001011212197. The next prime is 1001011212241. The reversal of 1001011212211 is 1122121101001.

It is a happy number.

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 1001011212211 - 2⁷ = 1001011212083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001011212191 and 1001011212200.

It is not an unprimeable number, because it can be changed into a prime (1001011212241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164474646 + ... + 164480731.

It is an arithmetic number, because the mean of its divisors is an integer number (133226928090).

Almost surely, 2^{1001011212211} is an apocalyptic number.

1001011212211 is a deficient number, since it is larger than the sum of its proper divisors (64804212509).

1001011212211 is a wasteful number, since it uses less digits than its factorization.

1001011212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328955573.

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

Adding to 1001011212211 its reverse (1122121101001), we get a palindrome (2123132313212).

The spelling of 1001011212211 in words is "one trillion, one billion, eleven million, two hundred twelve thousand, two hundred eleven".