121221131301 has 12 divisors (see below), whose sum is σ = 175104366528. Its totient is φ = 80810775144.

The previous prime is 121221131293. The next prime is 121221131309. The reversal of 121221131301 is 103131122121.

121221131301 is a `hidden beast` number, since 1 + 212 + 21 + 131 + 301 = 666.

It is an interprime number because it is at equal distance from previous prime (121221131293) and next prime (121221131309).

It is not a de Polignac number, because 121221131301 - 2³ = 121221131293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221131309) 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 11 ways as a sum of consecutive naturals, for example, 32995 + ... + 493488.

It is an arithmetic number, because the mean of its divisors is an integer number (14592030544).

Almost surely, 2^121221131301 is an apocalyptic number.

It is an amenable number.

121221131301 is a deficient number, since it is larger than the sum of its proper divisors (53883235227).

121221131301 is a wasteful number, since it uses less digits than its factorization.

121221131301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552072 (or 552069 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121221131301 its reverse (103131122121), we get a palindrome (224352253422).

The spelling of 121221131301 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred thirty-one thousand, three hundred one".