1423220244421 has 8 divisors (see below), whose sum is σ = 1425980318400. Its totient is φ = 1420462196160.

The previous prime is 1423220244373. The next prime is 1423220244451. The reversal of 1423220244421 is 1244420223241.

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 1423220244421 - 2²¹ = 1423218147269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423220244451) 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, 903885 + ... + 1914013.

It is an arithmetic number, because the mean of its divisors is an integer number (178247539800).

Almost surely, 2^{1423220244421} is an apocalyptic number.

It is an amenable number.

1423220244421 is a deficient number, since it is larger than the sum of its proper divisors (2760073979).

1423220244421 is a wasteful number, since it uses less digits than its factorization.

1423220244421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012859.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 1423220244421 its reverse (1244420223241), we get a palindrome (2667640467662).

The spelling of 1423220244421 in words is "one trillion, four hundred twenty-three billion, two hundred twenty million, two hundred forty-four thousand, four hundred twenty-one".