212230100440 has 32 divisors (see below), whose sum is σ = 477884882160. Its totient is φ = 84826768000.

The previous prime is 212230100437. The next prime is 212230100443. The reversal of 212230100440 is 44001032212.

It is an interprime number because it is at equal distance from previous prime (212230100437) and next prime (212230100443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212230100443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1987066 + ... + 2091145.

Almost surely, 2^212230100440 is an apocalyptic number.

212230100440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212230100440 is an abundant number, since it is smaller than the sum of its proper divisors (265654781720).

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

212230100440 is a wasteful number, since it uses less digits than its factorization.

212230100440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079523 (or 4079519 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212230100440 its reverse (44001032212), we get a palindrome (256231132652).

The spelling of 212230100440 in words is "two hundred twelve billion, two hundred thirty million, one hundred thousand, four hundred forty".