1420020221323 has 4 divisors (see below), whose sum is σ = 1549112968728. Its totient is φ = 1290927473920.

The previous prime is 1420020221317. The next prime is 1420020221351. The reversal of 1420020221323 is 3231220200241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420020221323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420020221294 and 1420020221303.

It is not an unprimeable number, because it can be changed into a prime (1420020221383) 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, 64546373686 + ... + 64546373707.

It is an arithmetic number, because the mean of its divisors is an integer number (387278242182).

Almost surely, 2^{1420020221323} is an apocalyptic number.

1420020221323 is a deficient number, since it is larger than the sum of its proper divisors (129092747405).

1420020221323 is a wasteful number, since it uses less digits than its factorization.

1420020221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129092747404.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1420020221323 its reverse (3231220200241), we get a palindrome (4651240421564).

The spelling of 1420020221323 in words is "one trillion, four hundred twenty billion, twenty million, two hundred twenty-one thousand, three hundred twenty-three".