2211222101 has 4 divisors (see below), whose sum is σ = 2412242304. Its totient is φ = 2010201900.

The previous prime is 2211222077. The next prime is 2211222103. The reversal of 2211222101 is 1012221122.

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.

It is a cyclic number.

It is not a de Polignac number, because 2211222101 - 2¹⁸ = 2210959957 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 (2211222103) 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, 100510085 + ... + 100510106.

It is an arithmetic number, because the mean of its divisors is an integer number (603060576).

Almost surely, 2^2211222101 is an apocalyptic number.

It is an amenable number.

2211222101 is a deficient number, since it is larger than the sum of its proper divisors (201020203).

2211222101 is a wasteful number, since it uses less digits than its factorization.

2211222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201020202.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2211222101 is about 47023.6334304358. The cubic root of 2211222101 is about 1302.7991168351.

Adding to 2211222101 its reverse (1012221122), we get a palindrome (3223443223).

The spelling of 2211222101 in words is "two billion, two hundred eleven million, two hundred twenty-two thousand, one hundred one".