401310420012021 has 16 divisors (see below), whose sum is σ = 578093466787200. Its totient is φ = 246166174029120.

The previous prime is 401310420012017. The next prime is 401310420012053. The reversal of 401310420012021 is 120210024013104.

It is not a de Polignac number, because 401310420012021 - 2² = 401310420012017 is a prime.

It is a super-2 number, since 2×401310420012021² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401310420012091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16543413546 + ... + 16543437803.

It is an arithmetic number, because the mean of its divisors is an integer number (36130841674200).

Almost surely, 2^{401310420012021} is an apocalyptic number.

It is an amenable number.

401310420012021 is a deficient number, since it is larger than the sum of its proper divisors (176783046775179).

401310420012021 is a wasteful number, since it uses less digits than its factorization.

401310420012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33086851676.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 401310420012021 its reverse (120210024013104), we get a palindrome (521520444025125).

The spelling of 401310420012021 in words is "four hundred one trillion, three hundred ten billion, four hundred twenty million, twelve thousand, twenty-one".