1222531430 has 32 divisors (see below), whose sum is σ = 2262847104. Its totient is φ = 475203456.

The previous prime is 1222531423. The next prime is 1222531433. The reversal of 1222531430 is 341352221.

It is a junction number, because it is equal to n+sod(n) for n = 1222531396 and 1222531405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222531433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402899 + ... + 405921.

It is an arithmetic number, because the mean of its divisors is an integer number (70713972).

Almost surely, 2^1222531430 is an apocalyptic number.

1222531430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222531430 is a deficient number, since it is larger than the sum of its proper divisors (1040315674).

1222531430 is a wasteful number, since it uses less digits than its factorization.

1222531430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1222531430 is about 34964.7169300711. The cubic root of 1222531430 is about 1069.2682655383.

Adding to 1222531430 its reverse (341352221), we get a palindrome (1563883651).

The spelling of 1222531430 in words is "one billion, two hundred twenty-two million, five hundred thirty-one thousand, four hundred thirty".