402121203324 has 12 divisors (see below), whose sum is σ = 938282807784. Its totient is φ = 134040401104.

The previous prime is 402121203311. The next prime is 402121203329. The reversal of 402121203324 is 423302121204.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 402121203294 and 402121203303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402121203329) 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, 16755050127 + ... + 16755050150.

It is an arithmetic number, because the mean of its divisors is an integer number (78190233982).

Almost surely, 2^402121203324 is an apocalyptic number.

It is an amenable number.

402121203324 is an abundant number, since it is smaller than the sum of its proper divisors (536161604460).

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

402121203324 is a wasteful number, since it uses less digits than its factorization.

402121203324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33510100284 (or 33510100282 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 402121203324 its reverse (423302121204), we get a palindrome (825423324528).

The spelling of 402121203324 in words is "four hundred two billion, one hundred twenty-one million, two hundred three thousand, three hundred twenty-four".