100721127450 has 48 divisors (see below), whose sum is σ = 249821197920. Its totient is φ = 26855440320.

The previous prime is 100721127439. The next prime is 100721127473. The reversal of 100721127450 is 54721127001.

100721127450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 1222972 + ... + 1302728.

It is an arithmetic number, because the mean of its divisors is an integer number (5204608290).

Almost surely, 2^100721127450 is an apocalyptic number.

100721127450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100721127450 is an abundant number, since it is smaller than the sum of its proper divisors (149100070470).

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

100721127450 is a wasteful number, since it uses less digits than its factorization.

100721127450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88191 (or 88186 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The spelling of 100721127450 in words is "one hundred billion, seven hundred twenty-one million, one hundred twenty-seven thousand, four hundred fifty".