1201122211 has 2 divisors, whose sum is σ = 1201122212. Its totient is φ = 1201122210.

The previous prime is 1201122089. The next prime is 1201122277. The reversal of 1201122211 is 1122211021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201122211 - 2⁹ = 1201121699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201122191 and 1201122200.

It is not a weakly prime, because it can be changed into another prime (1201128211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600561105 + 600561106.

It is an arithmetic number, because the mean of its divisors is an integer number (600561106).

Almost surely, 2^1201122211 is an apocalyptic number.

1201122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201122211 is an equidigital number, since it uses as much as digits as its factorization.

1201122211 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 1201122211 is about 34657.2100867915. The cubic root of 1201122211 is about 1062.9897235125.

Adding to 1201122211 its reverse (1122211021), we get a palindrome (2323333232).

The spelling of 1201122211 in words is "one billion, two hundred one million, one hundred twenty-two thousand, two hundred eleven".