10111001121211 has 4 divisors (see below), whose sum is σ = 10232820411912. Its totient is φ = 9989181830512.

The previous prime is 10111001121209. The next prime is 10111001121241. The reversal of 10111001121211 is 11212110011101.

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 10111001121211 - 2¹ = 10111001121209 is a prime.

It is a super-2 number, since 2×10111001121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10111001121191 and 10111001121200.

It is not an unprimeable number, because it can be changed into a prime (10111001121241) 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, 60909645226 + ... + 60909645391.

It is an arithmetic number, because the mean of its divisors is an integer number (2558205102978).

Almost surely, 2^{10111001121211} is an apocalyptic number.

10111001121211 is a deficient number, since it is larger than the sum of its proper divisors (121819290701).

10111001121211 is an equidigital number, since it uses as much as digits as its factorization.

10111001121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121819290700.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 10111001121211 its reverse (11212110011101), we get a palindrome (21323111132312).

The spelling of 10111001121211 in words is "ten trillion, one hundred eleven billion, one million, one hundred twenty-one thousand, two hundred eleven".