121012220113 has 16 divisors (see below), whose sum is σ = 130703341824. Its totient is φ = 111624226560.

The previous prime is 121012220071. The next prime is 121012220137. The reversal of 121012220113 is 311022210121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121012220113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121012226113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45273 + ... + 494038.

It is an arithmetic number, because the mean of its divisors is an integer number (8168958864).

Almost surely, 2^121012220113 is an apocalyptic number.

It is an amenable number.

121012220113 is a deficient number, since it is larger than the sum of its proper divisors (9691121711).

121012220113 is a wasteful number, since it uses less digits than its factorization.

121012220113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539592.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121012220113 its reverse (311022210121), we get a palindrome (432034430234).

The spelling of 121012220113 in words is "one hundred twenty-one billion, twelve million, two hundred twenty thousand, one hundred thirteen".