401959010121 has 8 divisors (see below), whose sum is σ = 535948708800. Its totient is φ = 267970992432.

The previous prime is 401959010039. The next prime is 401959010149. The reversal of 401959010121 is 121010959104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401959010121 - 2¹³ = 401959001929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401959010171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328051 + ... + 954743.

It is an arithmetic number, because the mean of its divisors is an integer number (66993588600).

Almost surely, 2^401959010121 is an apocalyptic number.

It is an amenable number.

401959010121 is a deficient number, since it is larger than the sum of its proper divisors (133989698679).

401959010121 is a wasteful number, since it uses less digits than its factorization.

401959010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840495.

The product of its (nonzero) digits is 3240, while the sum is 33.

Adding to 401959010121 its reverse (121010959104), we get a palindrome (522969969225).

The spelling of 401959010121 in words is "four hundred one billion, nine hundred fifty-nine million, ten thousand, one hundred twenty-one".