221122011111101 has 16 divisors (see below), whose sum is σ = 222618912069120. Its totient is φ = 219627723818880.

The previous prime is 221122011111097. The next prime is 221122011111107. The reversal of 221122011111101 is 101111110221122.

It is a cyclic number.

It is not a de Polignac number, because 221122011111101 - 2² = 221122011111097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221122011111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122011111107) 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, 776752076 + ... + 777036698.

It is an arithmetic number, because the mean of its divisors is an integer number (13913682004320).

Almost surely, 2^{221122011111101} is an apocalyptic number.

It is an amenable number.

221122011111101 is a deficient number, since it is larger than the sum of its proper divisors (1496900958019).

221122011111101 is a wasteful number, since it uses less digits than its factorization.

221122011111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289196.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 221122011111101 its reverse (101111110221122), we get a palindrome (322233121332223).

The spelling of 221122011111101 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, eleven million, one hundred eleven thousand, one hundred one".