10211220222111 has 24 divisors (see below), whose sum is σ = 15525967956720. Its totient is φ = 6449135210496.

The previous prime is 10211220222067. The next prime is 10211220222113. The reversal of 10211220222111 is 11122202211201.

10211220222111 is a `hidden beast` number, since 1 + 0 + 211 + 220 + 2 + 221 + 11 = 666.

It is not a de Polignac number, because 10211220222111 - 2²² = 10211216027807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211220222113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28583485 + ... + 28938521.

It is an arithmetic number, because the mean of its divisors is an integer number (646915331530).

Almost surely, 2^{10211220222111} is an apocalyptic number.

10211220222111 is a deficient number, since it is larger than the sum of its proper divisors (5314747734609).

10211220222111 is a wasteful number, since it uses less digits than its factorization.

10211220222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523255 (or 523252 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10211220222111 its reverse (11122202211201), we get a palindrome (21333422433312).

The spelling of 10211220222111 in words is "ten trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty-two thousand, one hundred eleven".