402211213420 has 24 divisors (see below), whose sum is σ = 850237220448. Its totient is φ = 159819024000.

The previous prime is 402211213399. The next prime is 402211213429. The reversal of 402211213420 is 24312112204.

It is a junction number, because it is equal to n+sod(n) for n = 402211213391 and 402211213400.

It is not an unprimeable number, because it can be changed into a prime (402211213429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66588241 + ... + 66594280.

It is an arithmetic number, because the mean of its divisors is an integer number (35426550852).

Almost surely, 2^402211213420 is an apocalyptic number.

It is an amenable number.

402211213420 is an abundant number, since it is smaller than the sum of its proper divisors (448026007028).

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

402211213420 is a wasteful number, since it uses less digits than its factorization.

402211213420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133182681 (or 133182679 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 402211213420 its reverse (24312112204), we get a palindrome (426523325624).

The spelling of 402211213420 in words is "four hundred two billion, two hundred eleven million, two hundred thirteen thousand, four hundred twenty".