401121004431020 has 24 divisors (see below), whose sum is σ = 842354688567168. Its totient is φ = 160448291436800.

The previous prime is 401121004431011. The next prime is 401121004431023. The reversal of 401121004431020 is 20134400121104.

It is not an unprimeable number, because it can be changed into a prime (401121004431023) 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, 26971685 + ... + 39111555.

It is an arithmetic number, because the mean of its divisors is an integer number (35098112023632).

Almost surely, 2^{401121004431020} is an apocalyptic number.

It is an amenable number.

401121004431020 is an abundant number, since it is smaller than the sum of its proper divisors (441233684136148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401121004431020 is a wasteful number, since it uses less digits than its factorization.

401121004431020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13791961 (or 13791959 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 401121004431020 its reverse (20134400121104), we get a palindrome (421255404552124).

The spelling of 401121004431020 in words is "four hundred one trillion, one hundred twenty-one billion, four million, four hundred thirty-one thousand, twenty".