244021401421 has 16 divisors (see below), whose sum is σ = 284282122240. Its totient is φ = 205145881200.

The previous prime is 244021401419. The next prime is 244021401431. The reversal of 244021401421 is 124104120442.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 244021401421 - 2¹ = 244021401419 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 (244021401401) 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, 1377651 + ... + 1544656.

It is an arithmetic number, because the mean of its divisors is an integer number (17767632640).

Almost surely, 2^244021401421 is an apocalyptic number.

It is an amenable number.

244021401421 is a deficient number, since it is larger than the sum of its proper divisors (40260720819).

244021401421 is a wasteful number, since it uses less digits than its factorization.

244021401421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922544.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 244021401421 its reverse (124104120442), we get a palindrome (368125521863).

The spelling of 244021401421 in words is "two hundred forty-four billion, twenty-one million, four hundred one thousand, four hundred twenty-one".