12220021423 has 8 divisors (see below), whose sum is σ = 12527776800. Its totient is φ = 11912728320.

The previous prime is 12220021381. The next prime is 12220021459. The reversal of 12220021423 is 32412002221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12220021423 - 2¹³ = 12220013231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12220021423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220028423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61723 + ... + 168076.

It is an arithmetic number, because the mean of its divisors is an integer number (1565972100).

Almost surely, 2^12220021423 is an apocalyptic number.

12220021423 is a deficient number, since it is larger than the sum of its proper divisors (307755377).

12220021423 is a wasteful number, since it uses less digits than its factorization.

12220021423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231137.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12220021423 its reverse (32412002221), we get a palindrome (44632023644).

The spelling of 12220021423 in words is "twelve billion, two hundred twenty million, twenty-one thousand, four hundred twenty-three".