212153299 has 4 divisors (see below), whose sum is σ = 219468960. Its totient is φ = 204837640.

The previous prime is 212153281. The next prime is 212153309. The reversal of 212153299 is 992351212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212153299 - 2⁷ = 212153171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212153239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3657787 + ... + 3657844.

It is an arithmetic number, because the mean of its divisors is an integer number (54867240).

Almost surely, 2^212153299 is an apocalyptic number.

212153299 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

212153299 is a deficient number, since it is larger than the sum of its proper divisors (7315661).

212153299 is an equidigital number, since it uses as much as digits as its factorization.

212153299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7315660.

The product of its digits is 9720, while the sum is 34.

The square root of 212153299 is about 14565.4831365115. The cubic root of 212153299 is about 596.4168845493.

The spelling of 212153299 in words is "two hundred twelve million, one hundred fifty-three thousand, two hundred ninety-nine".