406420222220 has 24 divisors (see below), whose sum is σ = 853575894864. Its totient is φ = 162550293056.

The previous prime is 406420222211. The next prime is 406420222261. The reversal of 406420222220 is 22222024604.

It is a self number, because there is not a number n which added to its sum of digits gives 406420222220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924194 + ... + 1291113.

It is an arithmetic number, because the mean of its divisors is an integer number (35565662286).

Almost surely, 2^406420222220 is an apocalyptic number.

It is an amenable number.

406420222220 is an abundant number, since it is smaller than the sum of its proper divisors (447155672644).

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

406420222220 is a wasteful number, since it uses less digits than its factorization.

406420222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224489 (or 2224487 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 406420222220 its reverse (22222024604), we get a palindrome (428642246824).

The spelling of 406420222220 in words is "four hundred six billion, four hundred twenty million, two hundred twenty-two thousand, two hundred twenty".