121886394084 has 384 divisors, whose sum is σ = 403455180800. Its totient is φ = 30955322880.

The previous prime is 121886394083. The next prime is 121886394101. The reversal of 121886394084 is 480493688121.

It is a happy number.

121886394084 is a `hidden beast` number, since 121 + 8 + 86 + 39 + 408 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 121886394084.

It is not an unprimeable number, because it can be changed into a prime (121886394083) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 69768099 + ... + 69769845.

Almost surely, 2^121886394084 is an apocalyptic number.

121886394084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121886394084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201727590400).

121886394084 is an abundant number, since it is smaller than the sum of its proper divisors (281568786716).

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

121886394084 is a wasteful number, since it uses less digits than its factorization.

121886394084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 121886394084 in words is "one hundred twenty-one billion, eight hundred eighty-six million, three hundred ninety-four thousand, eighty-four".