142112210621 has 2 divisors, whose sum is σ = 142112210622. Its totient is φ = 142112210620.

The previous prime is 142112210563. The next prime is 142112210659. The reversal of 142112210621 is 126012211241.

142112210621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136836367396 + 5275843225 = 369914^2 + 72635^2 .

It is a cyclic number.

It is not a de Polignac number, because 142112210621 - 2²² = 142108016317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142112210671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71056105310 + 71056105311.

It is an arithmetic number, because the mean of its divisors is an integer number (71056105311).

Almost surely, 2^142112210621 is an apocalyptic number.

It is an amenable number.

142112210621 is a deficient number, since it is larger than the sum of its proper divisors (1).

142112210621 is an equidigital number, since it uses as much as digits as its factorization.

142112210621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 142112210621 its reverse (126012211241), we get a palindrome (268124421862).

The spelling of 142112210621 in words is "one hundred forty-two billion, one hundred twelve million, two hundred ten thousand, six hundred twenty-one".