1211001022667 has 2 divisors, whose sum is σ = 1211001022668. Its totient is φ = 1211001022666.

The previous prime is 1211001022663. The next prime is 1211001022681. The reversal of 1211001022667 is 7662201001121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211001022667 - 2² = 1211001022663 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211001022663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605500511333 + 605500511334.

It is an arithmetic number, because the mean of its divisors is an integer number (605500511334).

Almost surely, 2^{1211001022667} is an apocalyptic number.

1211001022667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211001022667 is an equidigital number, since it uses as much as digits as its factorization.

1211001022667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 1211001022667 its reverse (7662201001121), we get a palindrome (8873202023788).

The spelling of 1211001022667 in words is "one trillion, two hundred eleven billion, one million, twenty-two thousand, six hundred sixty-seven".