10211020211111 has 16 divisors (see below), whose sum is σ = 10468778910720. Its totient is φ = 9956412496800.

The previous prime is 10211020211023. The next prime is 10211020211143. The reversal of 10211020211111 is 11111202011201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10211020211111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211020211191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25836530 + ... + 26228768.

It is an arithmetic number, because the mean of its divisors is an integer number (654298681920).

Almost surely, 2^{10211020211111} is an apocalyptic number.

10211020211111 is a deficient number, since it is larger than the sum of its proper divisors (257758699609).

10211020211111 is a wasteful number, since it uses less digits than its factorization.

10211020211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396254.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10211020211111 its reverse (11111202011201), we get a palindrome (21322222222312).

The spelling of 10211020211111 in words is "ten trillion, two hundred eleven billion, twenty million, two hundred eleven thousand, one hundred eleven".