212220404312140 has 96 divisors (see below), whose sum is σ = 529240786034688. Its totient is φ = 69947824320000.

The previous prime is 212220404312129. The next prime is 212220404312179. The reversal of 212220404312140 is 41213404022212.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 212220404312099 and 212220404312108.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 161260921 + ... + 162571600.

It is an arithmetic number, because the mean of its divisors is an integer number (5512924854528).

Almost surely, 2^{212220404312140} is an apocalyptic number.

212220404312140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220404312140 is an abundant number, since it is smaller than the sum of its proper divisors (317020381722548).

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

212220404312140 is a wasteful number, since it uses less digits than its factorization.

212220404312140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323832719 (or 323832717 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 212220404312140 its reverse (41213404022212), we get a palindrome (253433808334352).

The spelling of 212220404312140 in words is "two hundred twelve trillion, two hundred twenty billion, four hundred four million, three hundred twelve thousand, one hundred forty".