212134120422 has 128 divisors (see below), whose sum is σ = 510248678400. Its totient is φ = 57531741696.

The previous prime is 212134120399. The next prime is 212134120439. The reversal of 212134120422 is 224021431212.

It is a junction number, because it is equal to n+sod(n) for n = 212134120392 and 212134120401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14735604 + ... + 14749992.

It is an arithmetic number, because the mean of its divisors is an integer number (3986317800).

Almost surely, 2^212134120422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212134120422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255124339200).

212134120422 is an abundant number, since it is smaller than the sum of its proper divisors (298114557978).

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

212134120422 is a wasteful number, since it uses less digits than its factorization.

212134120422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14670.

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

Adding to 212134120422 its reverse (224021431212), we get a palindrome (436155551634).

The spelling of 212134120422 in words is "two hundred twelve billion, one hundred thirty-four million, one hundred twenty thousand, four hundred twenty-two".