121050445520 has 80 divisors (see below), whose sum is σ = 303144853440. Its totient is φ = 44804938752.

The previous prime is 121050445519. The next prime is 121050445541. The reversal of 121050445520 is 25544050121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 860669 + ... + 991388.

It is an arithmetic number, because the mean of its divisors is an integer number (3789310668).

Almost surely, 2^121050445520 is an apocalyptic number.

121050445520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121050445520 is an abundant number, since it is smaller than the sum of its proper divisors (182094407920).

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

121050445520 is a wasteful number, since it uses less digits than its factorization.

121050445520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852132 (or 1852126 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 121050445520 its reverse (25544050121), we get a palindrome (146594495641).

The spelling of 121050445520 in words is "one hundred twenty-one billion, fifty million, four hundred forty-five thousand, five hundred twenty".