10221220111009 has 16 divisors (see below), whose sum is σ = 10772007606400. Its totient is φ = 9671717696256.

The previous prime is 10221220110961. The next prime is 10221220111033. The reversal of 10221220111009 is 90011102212201.

It is a cyclic number.

It is not a de Polignac number, because 10221220111009 - 2¹¹ = 10221220108961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221220111099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208686847 + ... + 208735819.

It is an arithmetic number, because the mean of its divisors is an integer number (673250475400).

Almost surely, 2^{10221220111009} is an apocalyptic number.

10221220111009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

10221220111009 is a deficient number, since it is larger than the sum of its proper divisors (550787495391).

10221220111009 is a wasteful number, since it uses less digits than its factorization.

10221220111009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61864.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 10221220111009 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, nine".