1420444213221 has 8 divisors (see below), whose sum is σ = 2066100673824. Its totient is φ = 860875280720.

The previous prime is 1420444213159. The next prime is 1420444213259. The reversal of 1420444213221 is 1223124440241.

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 1420444213221 - 2¹⁰ = 1420444212197 is a prime.

It is a super-2 number, since 2×1420444213221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420444213271) 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, 21521881986 + ... + 21521882051.

It is an arithmetic number, because the mean of its divisors is an integer number (258262584228).

Almost surely, 2^{1420444213221} is an apocalyptic number.

1420444213221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1420444213221 is a deficient number, since it is larger than the sum of its proper divisors (645656460603).

1420444213221 is a wasteful number, since it uses less digits than its factorization.

1420444213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43043764051.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 1420444213221 its reverse (1223124440241), we get a palindrome (2643568653462).

The spelling of 1420444213221 in words is "one trillion, four hundred twenty billion, four hundred forty-four million, two hundred thirteen thousand, two hundred twenty-one".