100357710421021 has 4 divisors (see below), whose sum is σ = 102251252127132. Its totient is φ = 98464168714912.

The previous prime is 100357710420991. The next prime is 100357710421049. The reversal of 100357710421021 is 120124017753001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63115239140100 + 37242471280921 = 7944510^2 + 6102661^2 .

It is a cyclic number.

It is not a de Polignac number, because 100357710421021 - 2³¹ = 100355562937373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100357710421081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946770852976 + ... + 946770853081.

It is an arithmetic number, because the mean of its divisors is an integer number (25562813031783).

Almost surely, 2^{100357710421021} is an apocalyptic number.

It is an amenable number.

100357710421021 is a deficient number, since it is larger than the sum of its proper divisors (1893541706111).

100357710421021 is an equidigital number, since it uses as much as digits as its factorization.

100357710421021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893541706110.

The product of its (nonzero) digits is 11760, while the sum is 34.

The spelling of 100357710421021 in words is "one hundred trillion, three hundred fifty-seven billion, seven hundred ten million, four hundred twenty-one thousand, twenty-one".