101042101340021 has 8 divisors (see below), whose sum is σ = 101207443945944. Its totient is φ = 100876760398080.

The previous prime is 101042101340009. The next prime is 101042101340039. The reversal of 101042101340021 is 120043101240101.

It can be written as a sum of positive squares in 4 ways, for example, as 20370914962225 + 80671186377796 = 4513415^2 + 8981714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101042101340021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101042101339975 and 101042101340002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101042101343021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199855865 + ... + 200360801.

It is an arithmetic number, because the mean of its divisors is an integer number (12650930493243).

Almost surely, 2^{101042101340021} is an apocalyptic number.

It is an amenable number.

101042101340021 is a deficient number, since it is larger than the sum of its proper divisors (165342605923).

101042101340021 is an equidigital number, since it uses as much as digits as its factorization.

101042101340021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831991.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 101042101340021 its reverse (120043101240101), we get a palindrome (221085202580122).

The spelling of 101042101340021 in words is "one hundred one trillion, forty-two billion, one hundred one million, three hundred forty thousand, twenty-one".