221020022201111 has 32 divisors (see below), whose sum is σ = 265385382248448. Its totient is φ = 179967360117600.

The previous prime is 221020022201053. The next prime is 221020022201123. The reversal of 221020022201111 is 111102220020122.

221020022201111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221020022201111 - 2²² = 221020018006807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221020022201111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020022200111) 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, 27375986 + ... + 34517888.

It is an arithmetic number, because the mean of its divisors is an integer number (8293293195264).

Almost surely, 2^{221020022201111} is an apocalyptic number.

221020022201111 is a deficient number, since it is larger than the sum of its proper divisors (44365360047337).

221020022201111 is a wasteful number, since it uses less digits than its factorization.

221020022201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7143251.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221020022201111 its reverse (111102220020122), we get a palindrome (332122242221233).

The spelling of 221020022201111 in words is "two hundred twenty-one trillion, twenty billion, twenty-two million, two hundred one thousand, one hundred eleven".