1444022120021 has 8 divisors (see below), whose sum is σ = 1555146019224. Its totient is φ = 1332904688640.

The previous prime is 1444022119973. The next prime is 1444022120029. The reversal of 1444022120021 is 1200212204441.

It can be written as a sum of positive squares in 4 ways, for example, as 54655426225 + 1389366693796 = 233785^2 + 1178714^2 .

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 1444022120021 - 2²² = 1444017925717 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 (1444022120029) 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, 1148216 + ... + 2050961.

It is an arithmetic number, because the mean of its divisors is an integer number (194393252403).

Almost surely, 2^{1444022120021} is an apocalyptic number.

It is an amenable number.

1444022120021 is a deficient number, since it is larger than the sum of its proper divisors (111123899203).

1444022120021 is a wasteful number, since it uses less digits than its factorization.

1444022120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233911.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1444022120021 its reverse (1200212204441), we get a palindrome (2644234324462).

The spelling of 1444022120021 in words is "one trillion, four hundred forty-four billion, twenty-two million, one hundred twenty thousand, twenty-one".