121945528850 has 48 divisors (see below), whose sum is σ = 228722537160. Its totient is φ = 48370252800.

The previous prime is 121945528843. The next prime is 121945528867. The reversal of 121945528850 is 58825549121.

It is a happy number.

121945528850 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 349207²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 1 + 121945528849 = 1^2 + 349207^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3346730 + ... + 3382970.

Almost surely, 2^121945528850 is an apocalyptic number.

121945528850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121945528850 is a deficient number, since it is larger than the sum of its proper divisors (106777008310).

121945528850 is a wasteful number, since it uses less digits than its factorization.

121945528850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36815 (or 36810 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 50.

The spelling of 121945528850 in words is "one hundred twenty-one billion, nine hundred forty-five million, five hundred twenty-eight thousand, eight hundred fifty".