212052251430 has 48 divisors (see below), whose sum is σ = 571755706704. Its totient is φ = 56547266400.

The previous prime is 212052251393. The next prime is 212052251443. The reversal of 212052251430 is 34152250212.

212052251430 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 5 + 225 + 1 + 430 = 666.

212052251430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 212052251394 and 212052251403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43629721 + ... + 43634580.

It is an arithmetic number, because the mean of its divisors is an integer number (11911577223).

Almost surely, 2^212052251430 is an apocalyptic number.

212052251430 is an abundant number, since it is smaller than the sum of its proper divisors (359703455274).

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

212052251430 is an equidigital number, since it uses as much as digits as its factorization.

212052251430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87264323 (or 87264311 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 212052251430 in words is "two hundred twelve billion, fifty-two million, two hundred fifty-one thousand, four hundred thirty".