212123304525 has 24 divisors (see below), whose sum is σ = 382593307104. Its totient is φ = 102847662400.

The previous prime is 212123304467. The next prime is 212123304541. The reversal of 212123304525 is 525403321212.

It is not a de Polignac number, because 212123304525 - 2⁶ = 212123304461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212123304492 and 212123304501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128558754 + ... + 128560403.

It is an arithmetic number, because the mean of its divisors is an integer number (15941387796).

Almost surely, 2^212123304525 is an apocalyptic number.

212123304525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212123304525 is a deficient number, since it is larger than the sum of its proper divisors (170470002579).

212123304525 is a wasteful number, since it uses less digits than its factorization.

212123304525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257119181 (or 257119176 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 212123304525 its reverse (525403321212), we get a palindrome (737526625737).

The spelling of 212123304525 in words is "two hundred twelve billion, one hundred twenty-three million, three hundred four thousand, five hundred twenty-five".