1091018291101 has 2 divisors, whose sum is σ = 1091018291102. Its totient is φ = 1091018291100.

The previous prime is 1091018291003. The next prime is 1091018291119. The reversal of 1091018291101 is 1011928101901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1067194368601 + 23823922500 = 1033051^2 + 154350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091018291101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091018291131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545509145550 + 545509145551.

It is an arithmetic number, because the mean of its divisors is an integer number (545509145551).

Almost surely, 2^{1091018291101} is an apocalyptic number.

It is an amenable number.

1091018291101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091018291101 is an equidigital number, since it uses as much as digits as its factorization.

1091018291101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 34.

The spelling of 1091018291101 in words is "one trillion, ninety-one billion, eighteen million, two hundred ninety-one thousand, one hundred one".