221022120009 has 32 divisors (see below), whose sum is σ = 313921004544. Its totient is φ = 137842606080.

The previous prime is 221022119971. The next prime is 221022120091. The reversal of 221022120009 is 900021220122.

It is a happy number.

It is not a de Polignac number, because 221022120009 - 2⁸ = 221022119753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221022820009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7411689 + ... + 7441449.

It is an arithmetic number, because the mean of its divisors is an integer number (9810031392).

Almost surely, 2^221022120009 is an apocalyptic number.

It is an amenable number.

221022120009 is a deficient number, since it is larger than the sum of its proper divisors (92898884535).

221022120009 is a wasteful number, since it uses less digits than its factorization.

221022120009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30657.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 221022120009 in words is "two hundred twenty-one billion, twenty-two million, one hundred twenty thousand, nine".