1211201111147 has 2 divisors, whose sum is σ = 1211201111148. Its totient is φ = 1211201111146.

The previous prime is 1211201111117. The next prime is 1211201111243. The reversal of 1211201111147 is 7411111021121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211201111147 - 2⁶ = 1211201111083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211201111117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605600555573 + 605600555574.

It is an arithmetic number, because the mean of its divisors is an integer number (605600555574).

Almost surely, 2^{1211201111147} is an apocalyptic number.

1211201111147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211201111147 is an equidigital number, since it uses as much as digits as its factorization.

1211201111147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 23.

Adding to 1211201111147 its reverse (7411111021121), we get a palindrome (8622312132268).

The spelling of 1211201111147 in words is "one trillion, two hundred eleven billion, two hundred one million, one hundred eleven thousand, one hundred forty-seven".