142262311221 has 12 divisors (see below), whose sum is σ = 205494251820. Its totient is φ = 94839580800.

The previous prime is 142262311211. The next prime is 142262311237. The reversal of 142262311221 is 122113262241.

142262311221 is a `hidden beast` number, since 1 + 4 + 2 + 2 + 623 + 1 + 12 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41052432996 + 101209878225 = 202614^2 + 318135^2 .

It is not a de Polignac number, because 142262311221 - 2¹¹ = 142262309173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142262311201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397821 + ... + 665421.

It is an arithmetic number, because the mean of its divisors is an integer number (17124520985).

Almost surely, 2^142262311221 is an apocalyptic number.

It is an amenable number.

142262311221 is a deficient number, since it is larger than the sum of its proper divisors (63231940599).

142262311221 is a wasteful number, since it uses less digits than its factorization.

142262311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326676 (or 326673 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 142262311221 its reverse (122113262241), we get a palindrome (264375573462).

The spelling of 142262311221 in words is "one hundred forty-two billion, two hundred sixty-two million, three hundred eleven thousand, two hundred twenty-one".