212241043140 has 144 divisors (see below), whose sum is σ = 715137595200. Its totient is φ = 46839383808.

The previous prime is 212241043117. The next prime is 212241043141. The reversal of 212241043140 is 41340142212.

It is a self number, because there is not a number n which added to its sum of digits gives 212241043140.

It is not an unprimeable number, because it can be changed into a prime (212241043141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1159410 + ... + 1329929.

It is an arithmetic number, because the mean of its divisors is an integer number (4966233300).

Almost surely, 2^212241043140 is an apocalyptic number.

212241043140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212241043140 is an abundant number, since it is smaller than the sum of its proper divisors (502896552060).

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

212241043140 is a wasteful number, since it uses less digits than its factorization.

212241043140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489394 (or 2489385 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 212241043140 its reverse (41340142212), we get a palindrome (253581185352).

The spelling of 212241043140 in words is "two hundred twelve billion, two hundred forty-one million, forty-three thousand, one hundred forty".