10001211021211 has 8 divisors (see below), whose sum is σ = 10347230073600. Its totient is φ = 9655268616000.

The previous prime is 10001211021187. The next prime is 10001211021233. The reversal of 10001211021211 is 11212011210001.

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 not a de Polignac number, because 10001211021211 - 2⁹ = 10001211020699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001211021191 and 10001211021200.

It is not an unprimeable number, because it can be changed into a prime (10001211021281) 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, 18896251 + ... + 19418308.

It is an arithmetic number, because the mean of its divisors is an integer number (1293403759200).

Almost surely, 2^{10001211021211} is an apocalyptic number.

10001211021211 is a deficient number, since it is larger than the sum of its proper divisors (346019052389).

10001211021211 is an equidigital number, since it uses as much as digits as its factorization.

10001211021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38323589.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10001211021211 its reverse (11212011210001), we get a palindrome (21213222231212).

The spelling of 10001211021211 in words is "ten trillion, one billion, two hundred eleven million, twenty-one thousand, two hundred eleven".