212123153 has 8 divisors (see below), whose sum is σ = 232506336. Its totient is φ = 191923200.

The previous prime is 212123143. The next prime is 212123159. The reversal of 212123153 is 351321212.

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 212123153 - 2¹⁰ = 212122129 is a prime.

It is a super-2 number, since 2×212123153² = 89992464077322818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212123159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43376 + ... + 48017.

It is an arithmetic number, because the mean of its divisors is an integer number (29063292).

Almost surely, 2^212123153 is an apocalyptic number.

It is an amenable number.

212123153 is a deficient number, since it is larger than the sum of its proper divisors (20383183).

212123153 is a wasteful number, since it uses less digits than its factorization.

212123153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91615.

The product of its digits is 360, while the sum is 20.

The square root of 212123153 is about 14564.4482559416. The cubic root of 212123153 is about 596.3886338532.

Adding to 212123153 its reverse (351321212), we get a palindrome (563444365).

The spelling of 212123153 in words is "two hundred twelve million, one hundred twenty-three thousand, one hundred fifty-three".