1421444455001 has 4 divisors (see below), whose sum is σ = 1421860937892. Its totient is φ = 1421027972112.

The previous prime is 1421444454973. The next prime is 1421444455037. The reversal of 1421444455001 is 1005544441241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 838733598976 + 582710856025 = 915824^2 + 763355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421444455001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1421444455051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208236326 + ... + 208243151.

It is an arithmetic number, because the mean of its divisors is an integer number (355465234473).

Almost surely, 2^{1421444455001} is an apocalyptic number.

It is an amenable number.

1421444455001 is a deficient number, since it is larger than the sum of its proper divisors (416482891).

1421444455001 is an equidigital number, since it uses as much as digits as its factorization.

1421444455001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416482890.

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 1421444455001 its reverse (1005544441241), we get a palindrome (2426988896242).

The spelling of 1421444455001 in words is "one trillion, four hundred twenty-one billion, four hundred forty-four million, four hundred fifty-five thousand, one".