1222001101 has 4 divisors (see below), whose sum is σ = 1264139100. Its totient is φ = 1179863104.

The previous prime is 1222001087. The next prime is 1222001107. The reversal of 1222001101 is 1011002221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1011002221 = 311 ⋅3250811.

It can be written as a sum of positive squares in 2 ways, for example, as 589227076 + 632774025 = 24274^2 + 25155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222001101 - 2⁷ = 1222000973 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 (1222001107) 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, 21068956 + ... + 21069013.

It is an arithmetic number, because the mean of its divisors is an integer number (316034775).

Almost surely, 2^1222001101 is an apocalyptic number.

It is an amenable number.

1222001101 is a deficient number, since it is larger than the sum of its proper divisors (42137999).

1222001101 is an equidigital number, since it uses as much as digits as its factorization.

1222001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42137998.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1222001101 is about 34957.1323337599. The cubic root of 1222001101 is about 1069.1136284815.

Adding to 1222001101 its reverse (1011002221), we get a palindrome (2233003322).

The spelling of 1222001101 in words is "one billion, two hundred twenty-two million, one thousand, one hundred one".