212026151217 has 4 divisors (see below), whose sum is σ = 282701534960. Its totient is φ = 141350767476.

The previous prime is 212026151209. The next prime is 212026151243. The reversal of 212026151217 is 712151620212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212026151217 - 2³ = 212026151209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212026151257) 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, 35337691867 + ... + 35337691872.

It is an arithmetic number, because the mean of its divisors is an integer number (70675383740).

Almost surely, 2^212026151217 is an apocalyptic number.

It is an amenable number.

212026151217 is a deficient number, since it is larger than the sum of its proper divisors (70675383743).

212026151217 is an equidigital number, since it uses as much as digits as its factorization.

212026151217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70675383742.

The product of its (nonzero) digits is 3360, while the sum is 30.

Adding to 212026151217 its reverse (712151620212), we get a palindrome (924177771429).

The spelling of 212026151217 in words is "two hundred twelve billion, twenty-six million, one hundred fifty-one thousand, two hundred seventeen".