1122121201 has 2 divisors, whose sum is σ = 1122121202. Its totient is φ = 1122121200.

The previous prime is 1122121181. The next prime is 1122121213. The reversal of 1122121201 is 1021212211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737176801 + 384944400 = 27151^2 + 19620^2 .

It is an emirp because it is prime and its reverse (1021212211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122121201 - 2⁹ = 1122120689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1122121271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561060600 + 561060601.

It is an arithmetic number, because the mean of its divisors is an integer number (561060601).

Almost surely, 2^1122121201 is an apocalyptic number.

It is an amenable number.

1122121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122121201 is an equidigital number, since it uses as much as digits as its factorization.

1122121201 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1122121201 is about 33498.0775717055. The cubic root of 1122121201 is about 1039.1540214141.

Adding to 1122121201 its reverse (1021212211), we get a palindrome (2143333412).

The spelling of 1122121201 in words is "one billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred one".