405513202122 has 32 divisors (see below), whose sum is σ = 1029874800000. Its totient is φ = 115860914784.

The previous prime is 405513202111. The next prime is 405513202153. The reversal of 405513202122 is 221202315504.

405513202122 is a `hidden beast` number, since 4 + 0 + 5 + 513 + 20 + 2 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536392747 + ... + 536393502.

It is an arithmetic number, because the mean of its divisors is an integer number (32183587500).

Almost surely, 2^405513202122 is an apocalyptic number.

405513202122 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

405513202122 is an abundant number, since it is smaller than the sum of its proper divisors (624361597878).

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

405513202122 is a wasteful number, since it uses less digits than its factorization.

405513202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072786267 (or 1072786261 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 405513202122 its reverse (221202315504), we get a palindrome (626715517626).

The spelling of 405513202122 in words is "four hundred five billion, five hundred thirteen million, two hundred two thousand, one hundred twenty-two".