121234645005 has 16 divisors (see below), whose sum is σ = 194305898304. Its totient is φ = 64548321920.

The previous prime is 121234644967. The next prime is 121234645009. The reversal of 121234645005 is 500546432121.

It is not a de Polignac number, because 121234645005 - 2¹² = 121234640909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121234645009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6875616 + ... + 6893225.

It is an arithmetic number, because the mean of its divisors is an integer number (12144118644).

Almost surely, 2^121234645005 is an apocalyptic number.

121234645005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121234645005 is a deficient number, since it is larger than the sum of its proper divisors (73071253299).

121234645005 is a wasteful number, since it uses less digits than its factorization.

121234645005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13769436.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 121234645005 in words is "one hundred twenty-one billion, two hundred thirty-four million, six hundred forty-five thousand, five".