1001012201111 has 12 divisors (see below), whose sum is σ = 1084065857352. Its totient is φ = 923900810976.

The previous prime is 1001012201093. The next prime is 1001012201113. The reversal of 1001012201111 is 1111022101001.

It is not a de Polignac number, because 1001012201111 - 2⁶ = 1001012201047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001012201092 and 1001012201101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001012201113) 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 11 ways as a sum of consecutive naturals, for example, 1081145 + ... + 1780701.

It is an arithmetic number, because the mean of its divisors is an integer number (90338821446).

Almost surely, 2^{1001012201111} is an apocalyptic number.

1001012201111 is a deficient number, since it is larger than the sum of its proper divisors (83053656241).

1001012201111 is an equidigital number, since it uses as much as digits as its factorization.

1001012201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708050 (or 708037 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001012201111 its reverse (1111022101001), we get a palindrome (2112034302112).

The spelling of 1001012201111 in words is "one trillion, one billion, twelve million, two hundred one thousand, one hundred eleven".