212123151533 has 8 divisors (see below), whose sum is σ = 215927144640. Its totient is φ = 208350727200.

The previous prime is 212123151509. The next prime is 212123151547. The reversal of 212123151533 is 335151321212.

212123151533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212123151533 - 2¹⁶ = 212123085997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212123151496 and 212123151505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212123151553) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7878635 + ... + 7905512.

It is an arithmetic number, because the mean of its divisors is an integer number (26990893080).

Almost surely, 2^212123151533 is an apocalyptic number.

It is an amenable number.

212123151533 is a deficient number, since it is larger than the sum of its proper divisors (3803993107).

212123151533 is a wasteful number, since it uses less digits than its factorization.

212123151533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15784387.

The product of its digits is 5400, while the sum is 29.

Adding to 212123151533 its reverse (335151321212), we get a palindrome (547274472745).

The spelling of 212123151533 in words is "two hundred twelve billion, one hundred twenty-three million, one hundred fifty-one thousand, five hundred thirty-three".