121506873822 has 40 divisors (see below), whose sum is σ = 288281020896. Its totient is φ = 38119802688.

The previous prime is 121506873739. The next prime is 121506873827. The reversal of 121506873822 is 228378605121.

121506873822 is a `hidden beast` number, since 12 + 1 + 506 + 87 + 38 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121506873827) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22057318 + ... + 22062825.

Almost surely, 2^121506873822 is an apocalyptic number.

121506873822 is an abundant number, since it is smaller than the sum of its proper divisors (166774147074).

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

121506873822 is a wasteful number, since it uses less digits than its factorization.

121506873822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44120174 (or 44120165 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 121506873822 in words is "one hundred twenty-one billion, five hundred six million, eight hundred seventy-three thousand, eight hundred twenty-two".