121110106021819 has 2 divisors, whose sum is σ = 121110106021820. Its totient is φ = 121110106021818.

The previous prime is 121110106021799. The next prime is 121110106021873. The reversal of 121110106021819 is 918120601011121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121110106021819 - 2⁷ = 121110106021691 is a prime.

It is a super-2 number, since 2×121110106021819² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121110106021019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555053010909 + 60555053010910.

It is an arithmetic number, because the mean of its divisors is an integer number (60555053010910).

Almost surely, 2^{121110106021819} is an apocalyptic number.

121110106021819 is a deficient number, since it is larger than the sum of its proper divisors (1).

121110106021819 is an equidigital number, since it uses as much as digits as its factorization.

121110106021819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 34.

The spelling of 121110106021819 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred six million, twenty-one thousand, eight hundred nineteen".