2221021101 has 16 divisors (see below), whose sum is σ = 3190017600. Its totient is φ = 1366414080.

The previous prime is 2221021087. The next prime is 2221021129. The reversal of 2221021101 is 1011201222.

It is not a de Polignac number, because 2221021101 - 2⁵ = 2221021069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221021141) 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, 241141 + ... + 250181.

It is an arithmetic number, because the mean of its divisors is an integer number (199376100).

Almost surely, 2^2221021101 is an apocalyptic number.

It is an amenable number.

2221021101 is a deficient number, since it is larger than the sum of its proper divisors (968996499).

2221021101 is a wasteful number, since it uses less digits than its factorization.

2221021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15356.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2221021101 is about 47127.7105427370. The cubic root of 2221021101 is about 1304.7207264870.

Adding to 2221021101 its reverse (1011201222), we get a palindrome (3232222323).

The spelling of 2221021101 in words is "two billion, two hundred twenty-one million, twenty-one thousand, one hundred one".