121040343206 has 4 divisors (see below), whose sum is σ = 181560514812. Its totient is φ = 60520171602.

The previous prime is 121040343187. The next prime is 121040343209. The reversal of 121040343206 is 602343040121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 602343040121 = 173 ⋅3481751677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040343209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30260085800 + ... + 30260085803.

It is an arithmetic number, because the mean of its divisors is an integer number (45390128703).

Almost surely, 2^121040343206 is an apocalyptic number.

121040343206 is a deficient number, since it is larger than the sum of its proper divisors (60520171606).

121040343206 is an equidigital number, since it uses as much as digits as its factorization.

121040343206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60520171605.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 121040343206 its reverse (602343040121), we get a palindrome (723383383327).

The spelling of 121040343206 in words is "one hundred twenty-one billion, forty million, three hundred forty-three thousand, two hundred six".