102444030140021 has 8 divisors (see below), whose sum is σ = 107976141073080. Its totient is φ = 97045223084992.

The previous prime is 102444030140009. The next prime is 102444030140071. The reversal of 102444030140021 is 120041030444201.

It can be written as a sum of positive squares in 4 ways, for example, as 2571709359025 + 99872320780996 = 1603655^2 + 9993614^2 .

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-102444030140021 is a prime.

It is a super-2 number, since 2×102444030140021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102444030140071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33325967930 + ... + 33325971003.

It is an arithmetic number, because the mean of its divisors is an integer number (13497017634135).

Almost surely, 2^{102444030140021} is an apocalyptic number.

It is an amenable number.

102444030140021 is a deficient number, since it is larger than the sum of its proper divisors (5532110933059).

102444030140021 is an equidigital number, since it uses as much as digits as its factorization.

102444030140021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66651939015.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 102444030140021 its reverse (120041030444201), we get a palindrome (222485060584222).

The spelling of 102444030140021 in words is "one hundred two trillion, four hundred forty-four billion, thirty million, one hundred forty thousand, twenty-one".