221012211020109 has 16 divisors (see below), whose sum is σ = 304189521891840. Its totient is φ = 142588208090880.

The previous prime is 221012211020101. The next prime is 221012211020131. The reversal of 221012211020109 is 901020112210122.

It is not a de Polignac number, because 221012211020109 - 2³ = 221012211020101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012211020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44129097 + ... + 48881505.

It is an arithmetic number, because the mean of its divisors is an integer number (19011845118240).

Almost surely, 2^{221012211020109} is an apocalyptic number.

It is an amenable number.

221012211020109 is a deficient number, since it is larger than the sum of its proper divisors (83177310871731).

221012211020109 is a wasteful number, since it uses less digits than its factorization.

221012211020109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252500.

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 221012211020109 in words is "two hundred twenty-one trillion, twelve billion, two hundred eleven million, twenty thousand, one hundred nine".