1222400130 has 128 divisors (see below), whose sum is σ = 3633113088. Its totient is φ = 256822272.

The previous prime is 1222400063. The next prime is 1222400161. The reversal of 1222400130 is 310042221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149529 + ... + 157491.

It is an arithmetic number, because the mean of its divisors is an integer number (28383696).

Almost surely, 2^1222400130 is an apocalyptic number.

1222400130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222400130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816556544).

1222400130 is an abundant number, since it is smaller than the sum of its proper divisors (2410712958).

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

1222400130 is a wasteful number, since it uses less digits than its factorization.

1222400130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1222400130 is about 34962.8392725762. The cubic root of 1222400130 is about 1069.2299843276.

Adding to 1222400130 its reverse (310042221), we get a palindrome (1532442351).

The spelling of 1222400130 in words is "one billion, two hundred twenty-two million, four hundred thousand, one hundred thirty".