212320405134020 has 48 divisors (see below), whose sum is σ = 447525022264320. Its totient is φ = 84613709873664.

The previous prime is 212320405133939. The next prime is 212320405134041. The reversal of 212320405134020 is 20431504023212.

It is a super-2 number, since 2×212320405134020² (a number of 29 digits) contains 22 as substring.

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, 6025292 + ... + 21469628.

It is an arithmetic number, because the mean of its divisors is an integer number (9323437963840).

Almost surely, 2^{212320405134020} is an apocalyptic number.

212320405134020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212320405134020 is an abundant number, since it is smaller than the sum of its proper divisors (235204617130300).

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

212320405134020 is a wasteful number, since it uses less digits than its factorization.

212320405134020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15446892 (or 15446890 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 212320405134020 its reverse (20431504023212), we get a palindrome (232751909157232).

The spelling of 212320405134020 in words is "two hundred twelve trillion, three hundred twenty billion, four hundred five million, one hundred thirty-four thousand, twenty".