221110211201101 has 2 divisors, whose sum is σ = 221110211201102. Its totient is φ = 221110211201100.

The previous prime is 221110211201027. The next prime is 221110211201123. The reversal of 221110211201101 is 101102112011122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153364570562025 + 67745640639076 = 12384045^2 + 8230774^2 .

It is a cyclic number.

It is not a de Polignac number, because 221110211201101 - 2⁷ = 221110211200973 is a prime.

It is a super-2 number, since 2×221110211201101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221110211201141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555105600550 + 110555105600551.

It is an arithmetic number, because the mean of its divisors is an integer number (110555105600551).

Almost surely, 2^{221110211201101} is an apocalyptic number.

It is an amenable number.

221110211201101 is a deficient number, since it is larger than the sum of its proper divisors (1).

221110211201101 is an equidigital number, since it uses as much as digits as its factorization.

221110211201101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 221110211201101 its reverse (101102112011122), we get a palindrome (322212323212223).

The spelling of 221110211201101 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred eleven million, two hundred one thousand, one hundred one".