100120220021209 has 4 divisors (see below), whose sum is σ = 100160220111616. Its totient is φ = 100080219930804.

The previous prime is 100120220021179. The next prime is 100120220021221. The reversal of 100120220021209 is 902120022021001.

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 100120220021209 - 2²⁹ = 100119683150297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100120220021209.

It is not an unprimeable number, because it can be changed into a prime (100120220021009) 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 3 ways as a sum of consecutive naturals, for example, 20000041449 + ... + 20000046454.

It is an arithmetic number, because the mean of its divisors is an integer number (25040055027904).

Almost surely, 2^{100120220021209} is an apocalyptic number.

It is an amenable number.

100120220021209 is a deficient number, since it is larger than the sum of its proper divisors (40000090407).

100120220021209 is an equidigital number, since it uses as much as digits as its factorization.

100120220021209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40000090406.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 100120220021209 in words is "one hundred trillion, one hundred twenty billion, two hundred twenty million, twenty-one thousand, two hundred nine".