212158130460 has 96 divisors (see below), whose sum is σ = 614573568000. Its totient is φ = 54628331520.

The previous prime is 212158130441. The next prime is 212158130461. The reversal of 212158130460 is 64031851212.

It is a super-2 number, since 2×212158130460² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212158130461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708121 + ... + 962159.

It is an arithmetic number, because the mean of its divisors is an integer number (6401808000).

Almost surely, 2^212158130460 is an apocalyptic number.

212158130460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212158130460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307286784000).

212158130460 is an abundant number, since it is smaller than the sum of its proper divisors (402415437540).

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

212158130460 is a wasteful number, since it uses less digits than its factorization.

212158130460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254531 (or 254529 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 212158130460 its reverse (64031851212), we get a palindrome (276189981672).

The spelling of 212158130460 in words is "two hundred twelve billion, one hundred fifty-eight million, one hundred thirty thousand, four hundred sixty".