121451335005 has 64 divisors (see below), whose sum is σ = 260908075008. Its totient is φ = 46590716160.

The previous prime is 121451334989. The next prime is 121451335037. The reversal of 121451335005 is 500533154121.

It is not a de Polignac number, because 121451335005 - 2⁴ = 121451334989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4029319 + ... + 4059348.

It is an arithmetic number, because the mean of its divisors is an integer number (4076688672).

Almost surely, 2^121451335005 is an apocalyptic number.

121451335005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121451335005 is an abundant number, since it is smaller than the sum of its proper divisors (139456740003).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121451335005 is a wasteful number, since it uses less digits than its factorization.

121451335005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088706.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 121451335005 its reverse (500533154121), we get a palindrome (621984489126).

The spelling of 121451335005 in words is "one hundred twenty-one billion, four hundred fifty-one million, three hundred thirty-five thousand, five".