1222101121 has 4 divisors (see below), whose sum is σ = 1222463232. Its totient is φ = 1221739012.

The previous prime is 1222101079. The next prime is 1222101137. The reversal of 1222101121 is 1211012221.

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: 1211012221 = 17 ⋅71236013.

It is a cyclic number.

It is not a de Polignac number, because 1222101121 - 2⁷ = 1222100993 is a prime.

It is a super-2 number, since 2×1222101121² = 2987062299898913282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222101421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175945 + ... + 182758.

It is an arithmetic number, because the mean of its divisors is an integer number (305615808).

Almost surely, 2^1222101121 is an apocalyptic number.

It is an amenable number.

1222101121 is a deficient number, since it is larger than the sum of its proper divisors (362111).

1222101121 is an equidigital number, since it uses as much as digits as its factorization.

1222101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362110.

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

The square root of 1222101121 is about 34958.5629138270. The cubic root of 1222101121 is about 1069.1427964388.

Adding to 1222101121 its reverse (1211012221), we get a palindrome (2433113342).

Subtracting from 1222101121 its reverse (1211012221), we obtain a square (11088900 = 3330²).

The spelling of 1222101121 in words is "one billion, two hundred twenty-two million, one hundred one thousand, one hundred twenty-one".