142334333331221 has 4 divisors (see below), whose sum is σ = 150706941174252. Its totient is φ = 133961725488192.

The previous prime is 142334333331037. The next prime is 142334333331241. The reversal of 142334333331221 is 122133333433241.

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 94177048524196 + 48157284807025 = 9704486^2 + 6939545^2 .

It is a cyclic number.

It is not a de Polignac number, because 142334333331221 - 2¹⁴ = 142334333314837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142334333331241) 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, 4186303921490 + ... + 4186303921523.

It is an arithmetic number, because the mean of its divisors is an integer number (37676735293563).

Almost surely, 2^{142334333331221} is an apocalyptic number.

It is an amenable number.

142334333331221 is a deficient number, since it is larger than the sum of its proper divisors (8372607843031).

142334333331221 is an equidigital number, since it uses as much as digits as its factorization.

142334333331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372607843030.

The product of its digits is 279936, while the sum is 38.

Adding to 142334333331221 its reverse (122133333433241), we get a palindrome (264467666764462).

The spelling of 142334333331221 in words is "one hundred forty-two trillion, three hundred thirty-four billion, three hundred thirty-three million, three hundred thirty-one thousand, two hundred twenty-one".