401021012 has 12 divisors (see below), whose sum is σ = 802042080. Its totient is φ = 171866136.

The previous prime is 401021009. The next prime is 401021017. The reversal of 401021012 is 210120104.

401021012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 401020984 and 401021002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401021017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7161062 + ... + 7161117.

It is an arithmetic number, because the mean of its divisors is an integer number (66836840).

Almost surely, 2^401021012 is an apocalyptic number.

It is an amenable number.

401021012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

401021012 is a wasteful number, since it uses less digits than its factorization.

401021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14322190 (or 14322188 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 401021012 is about 20025.5090322319. The cubic root of 401021012 is about 737.4326738119.

Adding to 401021012 its reverse (210120104), we get a palindrome (611141116).

It can be divided in two parts, 40102 and 1012, that added together give a palindrome (41114).

The spelling of 401021012 in words is "four hundred one million, twenty-one thousand, twelve".