121752744100 has 36 divisors (see below), whose sum is σ = 284526800404. Its totient is φ = 44954858880.

The previous prime is 121752744037. The next prime is 121752744137. The reversal of 121752744100 is 1447257121.

It can be written as a sum of positive squares in 6 ways, for example, as 7221940324 + 114530803776 = 84982^2 + 338424^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46826679 + ... + 46829278.

Almost surely, 2^121752744100 is an apocalyptic number.

121752744100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121752744100 is an abundant number, since it is smaller than the sum of its proper divisors (162774056304).

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

121752744100 is a wasteful number, since it uses less digits than its factorization.

121752744100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93655984 (or 93655977 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The spelling of 121752744100 in words is "one hundred twenty-one billion, seven hundred fifty-two million, seven hundred forty-four thousand, one hundred".