1224121222 has 8 divisors (see below), whose sum is σ = 1863587736. Its totient is φ = 602925312.

The previous prime is 1224121207. The next prime is 1224121229. The reversal of 1224121222 is 2221214221.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1224121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224121229) 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, 4567483 + ... + 4567750.

It is an arithmetic number, because the mean of its divisors is an integer number (232948467).

Almost surely, 2^1224121222 is an apocalyptic number.

1224121222 is a deficient number, since it is larger than the sum of its proper divisors (639466514).

1224121222 is an equidigital number, since it uses as much as digits as its factorization.

1224121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9135302.

The product of its digits is 256, while the sum is 19.

The square root of 1224121222 is about 34987.4437763035. The cubic root of 1224121222 is about 1069.7315604587.

Adding to 1224121222 its reverse (2221214221), we get a palindrome (3445335443).

The spelling of 1224121222 in words is "one billion, two hundred twenty-four million, one hundred twenty-one thousand, two hundred twenty-two".