1000001131211 has 8 divisors (see below), whose sum is σ = 1022213896704. Its totient is φ = 977827371880.

The previous prime is 1000001131169. The next prime is 1000001131313. The reversal of 1000001131211 is 1121311000001.

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 a de Polignac number, because none of the positive numbers 2^k-1000001131211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000001131192 and 1000001131201.

It is not an unprimeable number, because it can be changed into a prime (1000001131111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9699695 + ... + 9802248.

It is an arithmetic number, because the mean of its divisors is an integer number (127776737088).

Almost surely, 2^{1000001131211} is an apocalyptic number.

1000001131211 is a deficient number, since it is larger than the sum of its proper divisors (22212765493).

1000001131211 is a wasteful number, since it uses less digits than its factorization.

1000001131211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19503081.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 1000001131211 its reverse (1121311000001), we get a palindrome (2121312131212).

The spelling of 1000001131211 in words is "one trillion, one million, one hundred thirty-one thousand, two hundred eleven".