401223035501 has 2 divisors, whose sum is σ = 401223035502. Its totient is φ = 401223035500.

The previous prime is 401223035347. The next prime is 401223035503. The reversal of 401223035501 is 105530322104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252130519876 + 149092515625 = 502126^2 + 386125^2 .

It is a cyclic number.

It is not a de Polignac number, because 401223035501 - 2²² = 401218841197 is a prime.

Together with 401223035503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401223035503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200611517750 + 200611517751.

It is an arithmetic number, because the mean of its divisors is an integer number (200611517751).

Almost surely, 2^401223035501 is an apocalyptic number.

It is an amenable number.

401223035501 is a deficient number, since it is larger than the sum of its proper divisors (1).

401223035501 is an equidigital number, since it uses as much as digits as its factorization.

401223035501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 401223035501 its reverse (105530322104), we get a palindrome (506753357605).

The spelling of 401223035501 in words is "four hundred one billion, two hundred twenty-three million, thirty-five thousand, five hundred one".