2221011101 has 2 divisors, whose sum is σ = 2221011102. Its totient is φ = 2221011100.

The previous prime is 2221011043. The next prime is 2221011157. The reversal of 2221011101 is 1011101222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2206180900 + 14830201 = 46970^2 + 3851^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221011101 - 2¹⁴ = 2220994717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221011301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110505550 + 1110505551.

It is an arithmetic number, because the mean of its divisors is an integer number (1110505551).

Almost surely, 2^2221011101 is an apocalyptic number.

It is an amenable number.

2221011101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221011101 is an equidigital number, since it uses as much as digits as its factorization.

2221011101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2221011101 is about 47127.6044479241. The cubic root of 2221011101 is about 1304.7187683446.

Adding to 2221011101 its reverse (1011101222), we get a palindrome (3232112323).

It can be divided in two parts, 222 and 1011101, that multiplied together give a palindrome (224464422).

The spelling of 2221011101 in words is "two billion, two hundred twenty-one million, eleven thousand, one hundred one".