121239061237 has 16 divisors (see below), whose sum is σ = 148323571200. Its totient is φ = 96781117680.

The previous prime is 121239061169. The next prime is 121239061241. The reversal of 121239061237 is 732160932121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121239061237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121239061196 and 121239061205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121239061277) 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, 7717339 + ... + 7733032.

It is an arithmetic number, because the mean of its divisors is an integer number (9270223200).

Almost surely, 2^121239061237 is an apocalyptic number.

It is an amenable number.

121239061237 is a deficient number, since it is larger than the sum of its proper divisors (27084509963).

121239061237 is a wasteful number, since it uses less digits than its factorization.

121239061237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15450456.

The product of its (nonzero) digits is 27216, while the sum is 37.

Adding to 121239061237 its reverse (732160932121), we get a palindrome (853399993358).

The spelling of 121239061237 in words is "one hundred twenty-one billion, two hundred thirty-nine million, sixty-one thousand, two hundred thirty-seven".