1222121430 has 48 divisors (see below), whose sum is σ = 3210296544. Its totient is φ = 322536960.

The previous prime is 1222121429. The next prime is 1222121437. The reversal of 1222121430 is 341212221.

It is a happy number.

1222121430 is a `hidden beast` number, since 1 + 22 + 212 + 1 + 430 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222121437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61266 + ... + 78725.

It is an arithmetic number, because the mean of its divisors is an integer number (66881178).

Almost surely, 2^1222121430 is an apocalyptic number.

1222121430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222121430 is an abundant number, since it is smaller than the sum of its proper divisors (1988175114).

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

1222121430 is a wasteful number, since it uses less digits than its factorization.

1222121430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140101 (or 140098 counting only the distinct ones).

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

The square root of 1222121430 is about 34958.8533850869. The cubic root of 1222121430 is about 1069.1487187804.

Adding to 1222121430 its reverse (341212221), we get a palindrome (1563333651).

The spelling of 1222121430 in words is "one billion, two hundred twenty-two million, one hundred twenty-one thousand, four hundred thirty".