1211201107 has 2 divisors, whose sum is σ = 1211201108. Its totient is φ = 1211201106.

The previous prime is 1211201087. The next prime is 1211201207. The reversal of 1211201107 is 7011021121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211201107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211201207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605600553 + 605600554.

It is an arithmetic number, because the mean of its divisors is an integer number (605600554).

Almost surely, 2^1211201107 is an apocalyptic number.

1211201107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211201107 is an equidigital number, since it uses as much as digits as its factorization.

1211201107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 16.

The square root of 1211201107 is about 34802.3146787681. The cubic root of 1211201107 is about 1065.9547103315.

Adding to 1211201107 its reverse (7011021121), we get a palindrome (8222222228).

The spelling of 1211201107 in words is "one billion, two hundred eleven million, two hundred one thousand, one hundred seven".