121010140105 has 4 divisors (see below), whose sum is σ = 145212168132. Its totient is φ = 96808112080.

The previous prime is 121010140091. The next prime is 121010140133. The reversal of 121010140105 is 501041010121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501041010121 = 229157 ⋅2186453.

It can be written as a sum of positive squares in 2 ways, for example, as 29411907001 + 91598233104 = 171499^2 + 302652^2 .

It is not a de Polignac number, because 121010140105 - 2⁵ = 121010140073 is a prime.

It is a super-2 number, since 2×121010140105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12101014006 + ... + 12101014015.

It is an arithmetic number, because the mean of its divisors is an integer number (36303042033).

Almost surely, 2^121010140105 is an apocalyptic number.

It is an amenable number.

121010140105 is a deficient number, since it is larger than the sum of its proper divisors (24202028027).

121010140105 is an equidigital number, since it uses as much as digits as its factorization.

121010140105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24202028026.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 121010140105 its reverse (501041010121), we get a palindrome (622051150226).

The spelling of 121010140105 in words is "one hundred twenty-one billion, ten million, one hundred forty thousand, one hundred five".