401201222077 has 2 divisors, whose sum is σ = 401201222078. Its totient is φ = 401201222076.

The previous prime is 401201222021. The next prime is 401201222089. The reversal of 401201222077 is 770222102104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337823663076 + 63377559001 = 581226^2 + 251749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401201222077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401201222377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200600611038 + 200600611039.

It is an arithmetic number, because the mean of its divisors is an integer number (200600611039).

Almost surely, 2^401201222077 is an apocalyptic number.

It is an amenable number.

401201222077 is a deficient number, since it is larger than the sum of its proper divisors (1).

401201222077 is an equidigital number, since it uses as much as digits as its factorization.

401201222077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 28.

The spelling of 401201222077 in words is "four hundred one billion, two hundred one million, two hundred twenty-two thousand, seventy-seven".