10001122221211 has 4 divisors (see below), whose sum is σ = 10910315150424. Its totient is φ = 9091929292000.

The previous prime is 10001122221179. The next prime is 10001122221263. The reversal of 10001122221211 is 11212222110001.

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 10001122221211 - 2⁵ = 10001122221179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001122221281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454596464590 + ... + 454596464611.

It is an arithmetic number, because the mean of its divisors is an integer number (2727578787606).

Almost surely, 2^{10001122221211} is an apocalyptic number.

10001122221211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10001122221211 is a deficient number, since it is larger than the sum of its proper divisors (909192929213).

10001122221211 is an equidigital number, since it uses as much as digits as its factorization.

10001122221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909192929212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10001122221211 its reverse (11212222110001), we get a palindrome (21213344331212).

It can be divided in two parts, 1000 and 1122221211, that added together give a palindrome (1122222211).

The spelling of 10001122221211 in words is "ten trillion, one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".