1244432421401 has 16 divisors (see below), whose sum is σ = 1366125566400. Its totient is φ = 1126541875008.

The previous prime is 1244432421391. The next prime is 1244432421433. The reversal of 1244432421401 is 1041242344421.

It is a cyclic number.

It is not a de Polignac number, because 1244432421401 - 2³⁸ = 969554514457 is a prime.

It is a super-2 number, since 2×1244432421401² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244432421481) 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, 1614746 + ... + 2257491.

It is an arithmetic number, because the mean of its divisors is an integer number (85382847900).

Almost surely, 2^{1244432421401} is an apocalyptic number.

It is an amenable number.

1244432421401 is a deficient number, since it is larger than the sum of its proper divisors (121693144999).

1244432421401 is a wasteful number, since it uses less digits than its factorization.

1244432421401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872728.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 1244432421401 its reverse (1041242344421), we get a palindrome (2285674765822).

The spelling of 1244432421401 in words is "one trillion, two hundred forty-four billion, four hundred thirty-two million, four hundred twenty-one thousand, four hundred one".