121805518070 has 32 divisors (see below), whose sum is σ = 228803590080. Its totient is φ = 46599562240.

The previous prime is 121805518063. The next prime is 121805518099. The reversal of 121805518070 is 70815508121.

121805518070 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×121805518070³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3746846 + ... + 3779214.

It is an arithmetic number, because the mean of its divisors is an integer number (7150112190).

Almost surely, 2^121805518070 is an apocalyptic number.

121805518070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121805518070 is a deficient number, since it is larger than the sum of its proper divisors (106998072010).

121805518070 is a wasteful number, since it uses less digits than its factorization.

121805518070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48760.

The product of its (nonzero) digits is 22400, while the sum is 38.

The spelling of 121805518070 in words is "one hundred twenty-one billion, eight hundred five million, five hundred eighteen thousand, seventy".