12302220021 has 32 divisors (see below), whose sum is σ = 20733904128. Its totient is φ = 6313697280.

The previous prime is 12302220011. The next prime is 12302220023. The reversal of 12302220021 is 12002220321.

It is a happy number.

It is not a de Polignac number, because 12302220021 - 2⁵ = 12302219989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12302220023) 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, 598860 + ... + 619061.

It is an arithmetic number, because the mean of its divisors is an integer number (647934504).

Almost surely, 2^12302220021 is an apocalyptic number.

It is an amenable number.

12302220021 is a deficient number, since it is larger than the sum of its proper divisors (8431684107).

12302220021 is a wasteful number, since it uses less digits than its factorization.

12302220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217981.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12302220021 its reverse (12002220321), we get a palindrome (24304440342).

The spelling of 12302220021 in words is "twelve billion, three hundred two million, two hundred twenty thousand, twenty-one".