1222350402 has 64 divisors (see below), whose sum is σ = 3015339264. Its totient is φ = 321684480.

The previous prime is 1222350401. The next prime is 1222350403. The reversal of 1222350402 is 2040532221.

It is an interprime number because it is at equal distance from previous prime (1222350401) and next prime (1222350403).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1222350401) 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, 282318 + ... + 286614.

It is an arithmetic number, because the mean of its divisors is an integer number (47114676).

Almost surely, 2^1222350402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222350402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507669632).

1222350402 is an abundant number, since it is smaller than the sum of its proper divisors (1792988862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222350402 is a wasteful number, since it uses less digits than its factorization.

1222350402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1222350402 is about 34962.1281102853. The cubic root of 1222350402 is about 1069.2154851500.

Adding to 1222350402 its reverse (2040532221), we get a palindrome (3262882623).

The spelling of 1222350402 in words is "one billion, two hundred twenty-two million, three hundred fifty thousand, four hundred two".