121275072050 has 96 divisors (see below), whose sum is σ = 252938614464. Its totient is φ = 42872544000.

The previous prime is 121275072019. The next prime is 121275072103. The reversal of 121275072050 is 50270572121.

It is a junction number, because it is equal to n+sod(n) for n = 121275071998 and 121275072016.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42387620 + ... + 42390480.

It is an arithmetic number, because the mean of its divisors is an integer number (2634777234).

Almost surely, 2^121275072050 is an apocalyptic number.

121275072050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121275072050 is an abundant number, since it is smaller than the sum of its proper divisors (131663542414).

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

121275072050 is a wasteful number, since it uses less digits than its factorization.

121275072050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004 (or 4999 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 32.

The spelling of 121275072050 in words is "one hundred twenty-one billion, two hundred seventy-five million, seventy-two thousand, fifty".