1221130130 has 64 divisors (see below), whose sum is σ = 2444656896. Its totient is φ = 435456000.

The previous prime is 1221130121. The next prime is 1221130153. The reversal of 1221130130 is 310311221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1934915 + ... + 1935545.

It is an arithmetic number, because the mean of its divisors is an integer number (38197764).

Almost surely, 2^1221130130 is an apocalyptic number.

1221130130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221130130 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1221130130 is a wasteful number, since it uses less digits than its factorization.

1221130130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1221130130 is about 34944.6724122576. The cubic root of 1221130130 is about 1068.8595675318.

Adding to 1221130130 its reverse (310311221), we get a palindrome (1531441351).

The spelling of 1221130130 in words is "one billion, two hundred twenty-one million, one hundred thirty thousand, one hundred thirty".