212310040404 has 96 divisors (see below), whose sum is σ = 638926848000. Its totient is φ = 53243890560.

The previous prime is 212310040403. The next prime is 212310040409. The reversal of 212310040404 is 404040013212.

It is a super-2 number, since 2×212310040404² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212310040403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3934804 + ... + 3988395.

It is an arithmetic number, because the mean of its divisors is an integer number (6655488000).

Almost surely, 2^212310040404 is an apocalyptic number.

It is an amenable number.

212310040404 is an abundant number, since it is smaller than the sum of its proper divisors (426616807596).

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

212310040404 is a wasteful number, since it uses less digits than its factorization.

212310040404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923253 (or 7923251 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 212310040404 its reverse (404040013212), we get a palindrome (616350053616).

The spelling of 212310040404 in words is "two hundred twelve billion, three hundred ten million, forty thousand, four hundred four".