1122201121 has 2 divisors, whose sum is σ = 1122201122. Its totient is φ = 1122201120.

The previous prime is 1122201109. The next prime is 1122201131. The reversal of 1122201121 is 1211022211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1030731025 + 91470096 = 32105^2 + 9564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122201121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122201131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561100560 + 561100561.

It is an arithmetic number, because the mean of its divisors is an integer number (561100561).

Almost surely, 2^1122201121 is an apocalyptic number.

It is an amenable number.

1122201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122201121 is an equidigital number, since it uses as much as digits as its factorization.

1122201121 is an evil number, because the sum of its binary digits is even.

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

The square root of 1122201121 is about 33499.2704547427. The cubic root of 1122201121 is about 1039.1786911253.

Adding to 1122201121 its reverse (1211022211), we get a palindrome (2333223332).

The spelling of 1122201121 in words is "one billion, one hundred twenty-two million, two hundred one thousand, one hundred twenty-one".