212012221212223 has 4 divisors (see below), whose sum is σ = 221230143873648. Its totient is φ = 202794298550800.

The previous prime is 212012221212199. The next prime is 212012221212257. The reversal of 212012221212223 is 322212122210212.

It is a happy number.

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 212012221212223 - 2⁹ = 212012221211711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012221212523) 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, 4608961330678 + ... + 4608961330723.

It is an arithmetic number, because the mean of its divisors is an integer number (55307535968412).

Almost surely, 2^{212012221212223} is an apocalyptic number.

212012221212223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

212012221212223 is a deficient number, since it is larger than the sum of its proper divisors (9217922661425).

212012221212223 is an equidigital number, since it uses as much as digits as its factorization.

212012221212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9217922661424.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 212012221212223 its reverse (322212122210212), we get a palindrome (534224343422435).

The spelling of 212012221212223 in words is "two hundred twelve trillion, twelve billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twenty-three".