10021120101209 has 16 divisors (see below), whose sum is σ = 11470554301440. Its totient is φ = 8576149155840.

The previous prime is 10021120101173. The next prime is 10021120101259. The reversal of 10021120101209 is 90210102112001.

It is not a de Polignac number, because 10021120101209 - 2¹² = 10021120097113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021120101259) 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 15 ways as a sum of consecutive naturals, for example, 72437897 + ... + 72576105.

It is an arithmetic number, because the mean of its divisors is an integer number (716909643840).

Almost surely, 2^{10021120101209} is an apocalyptic number.

It is an amenable number.

10021120101209 is a deficient number, since it is larger than the sum of its proper divisors (1449434200231).

10021120101209 is a wasteful number, since it uses less digits than its factorization.

10021120101209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154280.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 10021120101209 in words is "ten trillion, twenty-one billion, one hundred twenty million, one hundred one thousand, two hundred nine".