212442340020 has 48 divisors (see below), whose sum is σ = 594901083840. Its totient is φ = 56645335296.

The previous prime is 212442340013. The next prime is 212442340021. The reversal of 212442340020 is 20043244212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212442340021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404919 + ... + 767361.

It is an arithmetic number, because the mean of its divisors is an integer number (12393772580).

Almost surely, 2^212442340020 is an apocalyptic number.

212442340020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212442340020 is an abundant number, since it is smaller than the sum of its proper divisors (382458743820).

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

212442340020 is a wasteful number, since it uses less digits than its factorization.

212442340020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372224 (or 372222 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 212442340020 its reverse (20043244212), we get a palindrome (232485584232).

The spelling of 212442340020 in words is "two hundred twelve billion, four hundred forty-two million, three hundred forty thousand, twenty".