1220002130 has 16 divisors (see below), whose sum is σ = 2204553240. Its totient is φ = 486100992.

The previous prime is 1220002097. The next prime is 1220002139. The reversal of 1220002130 is 312000221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1102040809 + 117961321 = 33197^2 + 10861^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1220002139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234785 + ... + 239924.

Almost surely, 2^1220002130 is an apocalyptic number.

1220002130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220002130 is a deficient number, since it is larger than the sum of its proper divisors (984551110).

1220002130 is a wasteful number, since it uses less digits than its factorization.

1220002130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474973.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1220002130 is about 34928.5288839940. The cubic root of 1220002130 is about 1068.5303519978.

Adding to 1220002130 its reverse (312000221), we get a palindrome (1532002351).

The spelling of 1220002130 in words is "one billion, two hundred twenty million, two thousand, one hundred thirty".