2221211101 has 4 divisors (see below), whose sum is σ = 2292863104. Its totient is φ = 2149559100.

The previous prime is 2221211087. The next prime is 2221211141. The reversal of 2221211101 is 1011121222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1011121222 = 2 ⋅505560611.

It is a cyclic number.

It is not a de Polignac number, because 2221211101 - 2²⁷ = 2086993373 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 (2221211141) 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, 35825955 + ... + 35826016.

It is an arithmetic number, because the mean of its divisors is an integer number (573215776).

Almost surely, 2^2221211101 is an apocalyptic number.

It is an amenable number.

2221211101 is a deficient number, since it is larger than the sum of its proper divisors (71652003).

2221211101 is an equidigital number, since it uses as much as digits as its factorization.

2221211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71652002.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2221211101 is about 47129.7262988021. The cubic root of 2221211101 is about 1304.7579300761.

Adding to 2221211101 its reverse (1011121222), we get a palindrome (3232332323).

The spelling of 2221211101 in words is "two billion, two hundred twenty-one million, two hundred eleven thousand, one hundred one".