121216020046 has 32 divisors (see below), whose sum is σ = 200574890496. Its totient is φ = 54483408000.

The previous prime is 121216020019. The next prime is 121216020049. The reversal of 121216020046 is 640020612121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121216020046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121216020049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1014901 + ... + 1128031.

It is an arithmetic number, because the mean of its divisors is an integer number (6267965328).

Almost surely, 2^121216020046 is an apocalyptic number.

121216020046 is a deficient number, since it is larger than the sum of its proper divisors (79358870450).

121216020046 is a wasteful number, since it uses less digits than its factorization.

121216020046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113688.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 121216020046 its reverse (640020612121), we get a palindrome (761236632167).

The spelling of 121216020046 in words is "one hundred twenty-one billion, two hundred sixteen million, twenty thousand, forty-six".