212222412240 has 80 divisors (see below), whose sum is σ = 664671916608. Its totient is φ = 56009207808.

The previous prime is 212222412229. The next prime is 212222412251. The reversal of 212222412240 is 42214222212.

It is an interprime number because it is at equal distance from previous prime (212222412229) and next prime (212222412251).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 212222412240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4534762 + ... + 4581321.

Almost surely, 2^212222412240 is an apocalyptic number.

212222412240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222412240 is an abundant number, since it is smaller than the sum of its proper divisors (452449504368).

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

212222412240 is a wasteful number, since it uses less digits than its factorization.

212222412240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9116196 (or 9116190 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 212222412240 its reverse (42214222212), we get a palindrome (254436634452).

The spelling of 212222412240 in words is "two hundred twelve billion, two hundred twenty-two million, four hundred twelve thousand, two hundred forty".