422154821237 has 2 divisors, whose sum is σ = 422154821238. Its totient is φ = 422154821236.

The previous prime is 422154821141. The next prime is 422154821273. The reversal of 422154821237 is 732128451224.

Together with next prime (422154821273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401051157796 + 21103663441 = 633286^2 + 145271^2 .

It is a cyclic number.

It is not a de Polignac number, because 422154821237 - 2³⁰ = 421081079413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 422154821194 and 422154821203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422154811237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211077410618 + 211077410619.

It is an arithmetic number, because the mean of its divisors is an integer number (211077410619).

Almost surely, 2^422154821237 is an apocalyptic number.

It is an amenable number.

422154821237 is a deficient number, since it is larger than the sum of its proper divisors (1).

422154821237 is an equidigital number, since it uses as much as digits as its factorization.

422154821237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 41.

The spelling of 422154821237 in words is "four hundred twenty-two billion, one hundred fifty-four million, eight hundred twenty-one thousand, two hundred thirty-seven".