1001212322111 has 4 divisors (see below), whose sum is σ = 1033509493824. Its totient is φ = 968915150400.

The previous prime is 1001212322083. The next prime is 1001212322119. The reversal of 1001212322111 is 1112232121001.

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 1001212322111 - 2²⁶ = 1001145213247 is a prime.

It is a super-2 number, since 2×1001212322111² (a number of 25 digits) contains 22 as substring.

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 1001212322111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001212322119) 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 3 ways as a sum of consecutive naturals, for example, 16148585810 + ... + 16148585871.

It is an arithmetic number, because the mean of its divisors is an integer number (258377373456).

Almost surely, 2^{1001212322111} is an apocalyptic number.

1001212322111 is a deficient number, since it is larger than the sum of its proper divisors (32297171713).

1001212322111 is an equidigital number, since it uses as much as digits as its factorization.

1001212322111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32297171712.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1001212322111 its reverse (1112232121001), we get a palindrome (2113444443112).

The spelling of 1001212322111 in words is "one trillion, one billion, two hundred twelve million, three hundred twenty-two thousand, one hundred eleven".