121091050080 has 1296 divisors, whose sum is σ = 569524383792. Its totient is φ = 23204966400.

The previous prime is 121091050063. The next prime is 121091050081. The reversal of 121091050080 is 80050190121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121091050081) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 110990335 + ... + 110991425.

It is an arithmetic number, because the mean of its divisors is an integer number (439447827).

Almost surely, 2^121091050080 is an apocalyptic number.

121091050080 is a gapful number since it is divisible by the number (10) 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 121091050080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284762191896).

121091050080 is an abundant number, since it is smaller than the sum of its proper divisors (448433333712).

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

121091050080 is a wasteful number, since it uses less digits than its factorization.

121091050080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The spelling of 121091050080 in words is "one hundred twenty-one billion, ninety-one million, fifty thousand, eighty".