142401201221 has 8 divisors (see below), whose sum is σ = 149510269920. Its totient is φ = 135438711408.

The previous prime is 142401201211. The next prime is 142401201287. The reversal of 142401201221 is 122102104241.

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 142401201221 - 2¹⁸ = 142400939077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142401201193 and 142401201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142401201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36642731 + ... + 36646616.

It is an arithmetic number, because the mean of its divisors is an integer number (18688783740).

Almost surely, 2^142401201221 is an apocalyptic number.

It is an amenable number.

142401201221 is a deficient number, since it is larger than the sum of its proper divisors (7109068699).

142401201221 is an equidigital number, since it uses as much as digits as its factorization.

142401201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73289443.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 142401201221 its reverse (122102104241), we get a palindrome (264503305462).

The spelling of 142401201221 in words is "one hundred forty-two billion, four hundred one million, two hundred one thousand, two hundred twenty-one".