50121211104 has 108 divisors (see below), whose sum is σ = 148007301624. Its totient is φ = 16707000384.

The previous prime is 50121211073. The next prime is 50121211187. The reversal of 50121211104 is 40111212105.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 90589 + ... + 329315.

It is an arithmetic number, because the mean of its divisors is an integer number (1370437978).

Almost surely, 2^50121211104 is an apocalyptic number.

50121211104 is a gapful number since it is divisible by the number (54) 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 50121211104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74003650812).

50121211104 is an abundant number, since it is smaller than the sum of its proper divisors (97886090520).

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

50121211104 is an frugal number, since it uses more digits than its factorization.

50121211104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238761 (or 238732 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 50121211104 its reverse (40111212105), we get a palindrome (90232423209).

The spelling of 50121211104 in words is "fifty billion, one hundred twenty-one million, two hundred eleven thousand, one hundred four".