212440140230 has 16 divisors (see below), whose sum is σ = 382399370064. Its totient is φ = 84974474400.

The previous prime is 212440140223. The next prime is 212440140257. The reversal of 212440140230 is 32041044212.

It is a junction number, because it is equal to n+sod(n) for n = 212440140196 and 212440140205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475580 + ... + 806880.

It is an arithmetic number, because the mean of its divisors is an integer number (23899960629).

Almost surely, 2^212440140230 is an apocalyptic number.

212440140230 is a deficient number, since it is larger than the sum of its proper divisors (169959229834).

212440140230 is a wasteful number, since it uses less digits than its factorization.

212440140230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395431.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 212440140230 its reverse (32041044212), we get a palindrome (244481184442).

The spelling of 212440140230 in words is "two hundred twelve billion, four hundred forty million, one hundred forty thousand, two hundred thirty".