405222213400 has 24 divisors (see below), whose sum is σ = 942141646620. Its totient is φ = 162088885280.

The previous prime is 405222213377. The next prime is 405222213401. The reversal of 405222213400 is 4312222504.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405222213401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1013055334 + ... + 1013055733.

Almost surely, 2^405222213400 is an apocalyptic number.

405222213400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

405222213400 is an abundant number, since it is smaller than the sum of its proper divisors (536919433220).

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

405222213400 is a wasteful number, since it uses less digits than its factorization.

405222213400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026111083 (or 2026111074 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 405222213400 its reverse (4312222504), we get a palindrome (409534435904).

The spelling of 405222213400 in words is "four hundred five billion, two hundred twenty-two million, two hundred thirteen thousand, four hundred".