13242120422121 has 64 divisors (see below), whose sum is σ = 20440086912000. Its totient is φ = 8465528568960.

The previous prime is 13242120422119. The next prime is 13242120422123. The reversal of 13242120422121 is 12122402124231.

13242120422121 is a `hidden beast` number, since 1 + 3 + 2 + 4 + 212 + 0 + 422 + 1 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (13242120422119) and next prime (13242120422123).

It is not a de Polignac number, because 13242120422121 - 2¹ = 13242120422119 is a prime.

It is a super-2 number, since 2×13242120422121² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13242120422123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 670036186 + ... + 670055948.

It is an arithmetic number, because the mean of its divisors is an integer number (319376358000).

Almost surely, 2^{13242120422121} is an apocalyptic number.

It is an amenable number.

13242120422121 is a deficient number, since it is larger than the sum of its proper divisors (7197966489879).

13242120422121 is a wasteful number, since it uses less digits than its factorization.

13242120422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30131 (or 30125 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 13242120422121 its reverse (12122402124231), we get a palindrome (25364522546352).

The spelling of 13242120422121 in words is "thirteen trillion, two hundred forty-two billion, one hundred twenty million, four hundred twenty-two thousand, one hundred twenty-one".