1221014223 has 32 divisors (see below), whose sum is σ = 2125159680. Its totient is φ = 683082720.

The previous prime is 1221014213. The next prime is 1221014227. The reversal of 1221014223 is 3224101221.

It is a happy number.

It is not a de Polignac number, because 1221014223 - 2⁹ = 1221013711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1221014196 and 1221014205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221014227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154261 + ... + 161982.

It is an arithmetic number, because the mean of its divisors is an integer number (66411240).

Almost surely, 2^1221014223 is an apocalyptic number.

1221014223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1221014223 is a deficient number, since it is larger than the sum of its proper divisors (904145457).

1221014223 is a wasteful number, since it uses less digits than its factorization.

1221014223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316276 (or 316270 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1221014223 is about 34943.0139369803. The cubic root of 1221014223 is about 1068.8257485246.

Adding to 1221014223 its reverse (3224101221), we get a palindrome (4445115444).

The spelling of 1221014223 in words is "one billion, two hundred twenty-one million, fourteen thousand, two hundred twenty-three".