121111219011001 has 2 divisors, whose sum is σ = 121111219011002. Its totient is φ = 121111219011000.

The previous prime is 121111219010989. The next prime is 121111219011011. The reversal of 121111219011001 is 100110912111121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61317497641401 + 59793721369600 = 7830549^2 + 7732640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121111219011001 is a prime.

It is not a weakly prime, because it can be changed into another prime (121111219011011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555609505500 + 60555609505501.

It is an arithmetic number, because the mean of its divisors is an integer number (60555609505501).

Almost surely, 2^{121111219011001} is an apocalyptic number.

It is an amenable number.

121111219011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121111219011001 is an equidigital number, since it uses as much as digits as its factorization.

121111219011001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 22.

The spelling of 121111219011001 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred nineteen million, eleven thousand, one".