212445223154 has 8 divisors (see below), whose sum is σ = 318765865968. Its totient is φ = 106189934500.

The previous prime is 212445223141. The next prime is 212445223163. The reversal of 212445223154 is 451322544212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16330412 + ... + 16343415.

It is an arithmetic number, because the mean of its divisors is an integer number (39845733246).

Almost surely, 2^212445223154 is an apocalyptic number.

212445223154 is a deficient number, since it is larger than the sum of its proper divisors (106320642814).

212445223154 is a wasteful number, since it uses less digits than its factorization.

212445223154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32677080.

The product of its digits is 76800, while the sum is 35.

Adding to 212445223154 its reverse (451322544212), we get a palindrome (663767767366).

The spelling of 212445223154 in words is "two hundred twelve billion, four hundred forty-five million, two hundred twenty-three thousand, one hundred fifty-four".