1211001022159 has 2 divisors, whose sum is σ = 1211001022160. Its totient is φ = 1211001022158.

The previous prime is 1211001022141. The next prime is 1211001022229. The reversal of 1211001022159 is 9512201001121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211001022159 - 2³¹ = 1208853538511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211001022109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605500511079 + 605500511080.

It is an arithmetic number, because the mean of its divisors is an integer number (605500511080).

Almost surely, 2^{1211001022159} is an apocalyptic number.

1211001022159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211001022159 is an equidigital number, since it uses as much as digits as its factorization.

1211001022159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 25.

The spelling of 1211001022159 in words is "one trillion, two hundred eleven billion, one million, twenty-two thousand, one hundred fifty-nine".