121145843500 has 48 divisors (see below), whose sum is σ = 288635491872. Its totient is φ = 44053032000.

The previous prime is 121145843473. The next prime is 121145843521. The reversal of 121145843500 is 5348541121.

It is a super-3 number, since 3×121145843500³ (a number of 34 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 11007759 + ... + 11018758.

It is an arithmetic number, because the mean of its divisors is an integer number (6013239414).

Almost surely, 2^121145843500 is an apocalyptic number.

121145843500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121145843500 is an abundant number, since it is smaller than the sum of its proper divisors (167489648372).

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

121145843500 is a wasteful number, since it uses less digits than its factorization.

121145843500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22026547 (or 22026535 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 121145843500 in words is "one hundred twenty-one billion, one hundred forty-five million, eight hundred forty-three thousand, five hundred".