10001122112211 has 4 divisors (see below), whose sum is σ = 13334829482952. Its totient is φ = 6667414741472.

The previous prime is 10001122112197. The next prime is 10001122112213. The reversal of 10001122112211 is 11221122110001.

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 10001122112211 - 2¹⁰ = 10001122111187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10001122112213) 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 3 ways as a sum of consecutive naturals, for example, 1666853685366 + ... + 1666853685371.

It is an arithmetic number, because the mean of its divisors is an integer number (3333707370738).

Almost surely, 2^{10001122112211} is an apocalyptic number.

10001122112211 is a deficient number, since it is larger than the sum of its proper divisors (3333707370741).

10001122112211 is an equidigital number, since it uses as much as digits as its factorization.

10001122112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333707370740.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10001122112211 its reverse (11221122110001), we get a palindrome (21222244222212).

The spelling of 10001122112211 in words is "ten trillion, one billion, one hundred twenty-two million, one hundred twelve thousand, two hundred eleven".