121312282113 has 24 divisors (see below), whose sum is σ = 197325163776. Its totient is φ = 71150896800.

The previous prime is 121312282097. The next prime is 121312282121. The reversal of 121312282113 is 311282213121.

It is a happy number.

It is not a de Polignac number, because 121312282113 - 2⁴ = 121312282097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121312282123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19761070 + ... + 19767207.

It is an arithmetic number, because the mean of its divisors is an integer number (8221881824).

Almost surely, 2^121312282113 is an apocalyptic number.

It is an amenable number.

121312282113 is a deficient number, since it is larger than the sum of its proper divisors (76012881663).

121312282113 is a wasteful number, since it uses less digits than its factorization.

121312282113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39528325 (or 39528322 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

Adding to 121312282113 its reverse (311282213121), we get a palindrome (432594495234).

The spelling of 121312282113 in words is "one hundred twenty-one billion, three hundred twelve million, two hundred eighty-two thousand, one hundred thirteen".