1000012211201 has 6 divisors (see below), whose sum is σ = 1014295271106. Its totient is φ = 985927527200.

The previous prime is 1000012211167. The next prime is 1000012211207. The reversal of 1000012211201 is 1021122100001.

It can be written as a sum of positive squares in only one way, i.e., 527658412801 + 472353798400 = 726401^2 + 687280^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1000012211201 is a prime.

It is a super-2 number, since 2×1000012211201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000012211207) 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 5 ways as a sum of consecutive naturals, for example, 99182840 + ... + 99192921.

It is an arithmetic number, because the mean of its divisors is an integer number (169049211851).

Almost surely, 2^{1000012211201} is an apocalyptic number.

It is an amenable number.

1000012211201 is a deficient number, since it is larger than the sum of its proper divisors (14283059905).

1000012211201 is an frugal number, since it uses more digits than its factorization.

1000012211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198375903 (or 198375832 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000012211201 its reverse (1021122100001), we get a palindrome (2021134311202).

The spelling of 1000012211201 in words is "one trillion, twelve million, two hundred eleven thousand, two hundred one".