2110221101 has 4 divisors (see below), whose sum is σ = 2234351772. Its totient is φ = 1986090432.

The previous prime is 2110221097. The next prime is 2110221107. The reversal of 2110221101 is 1011220112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1310802025 + 799419076 = 36205^2 + 28274^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110221101 - 2² = 2110221097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110221107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62065310 + ... + 62065343.

It is an arithmetic number, because the mean of its divisors is an integer number (558587943).

Almost surely, 2^2110221101 is an apocalyptic number.

It is an amenable number.

2110221101 is a deficient number, since it is larger than the sum of its proper divisors (124130671).

2110221101 is a wasteful number, since it uses less digits than its factorization.

2110221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124130670.

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

The square root of 2110221101 is about 45937.1429346667. The cubic root of 2110221101 is about 1282.6534111430.

Adding to 2110221101 its reverse (1011220112), we get a palindrome (3121441213).

The spelling of 2110221101 in words is "two billion, one hundred ten million, two hundred twenty-one thousand, one hundred one".