100021010120009 has 4 divisors (see below), whose sum is σ = 109113829221840. Its totient is φ = 90928191018180.

The previous prime is 100021010119967. The next prime is 100021010120029. The reversal of 100021010120009 is 900021010120001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100021010120009 - 2³² = 100016715152713 is a prime.

It is a super-4 number, since 4×100021010120009⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100021010120029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4546409550899 + ... + 4546409550920.

It is an arithmetic number, because the mean of its divisors is an integer number (27278457305460).

Almost surely, 2^{100021010120009} is an apocalyptic number.

It is an amenable number.

100021010120009 is a deficient number, since it is larger than the sum of its proper divisors (9092819101831).

100021010120009 is an equidigital number, since it uses as much as digits as its factorization.

100021010120009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9092819101830.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 100021010120009 in words is "one hundred trillion, twenty-one billion, ten million, one hundred twenty thousand, nine".