221120111021011 has 32 divisors (see below), whose sum is σ = 229520132352000. Its totient is φ = 212904432892800.

The previous prime is 221120111021003. The next prime is 221120111021039. The reversal of 221120111021011 is 110120111021122.

It is a cyclic number.

It is not a de Polignac number, because 221120111021011 - 2³ = 221120111021003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120111022011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 692270980 + ... + 692590318.

It is an arithmetic number, because the mean of its divisors is an integer number (7172504136000).

Almost surely, 2^{221120111021011} is an apocalyptic number.

221120111021011 is a deficient number, since it is larger than the sum of its proper divisors (8400021330989).

221120111021011 is a wasteful number, since it uses less digits than its factorization.

221120111021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320419.

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

Adding to 221120111021011 its reverse (110120111021122), we get a palindrome (331240222042133).

The spelling of 221120111021011 in words is "two hundred twenty-one trillion, one hundred twenty billion, one hundred eleven million, twenty-one thousand, eleven".