1220151630 has 32 divisors (see below), whose sum is σ = 3022829568. Its totient is φ = 314877600.

The previous prime is 1220151629. The next prime is 1220151649. The reversal of 1220151630 is 361510221.

It is a junction number, because it is equal to n+sod(n) for n = 1220151597 and 1220151606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655066 + ... + 656925.

It is an arithmetic number, because the mean of its divisors is an integer number (94463424).

Almost surely, 2^1220151630 is an apocalyptic number.

1220151630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220151630 is an abundant number, since it is smaller than the sum of its proper divisors (1802677938).

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

1220151630 is a wasteful number, since it uses less digits than its factorization.

1220151630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312032.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1220151630 is about 34930.6689028424. The cubic root of 1220151630 is about 1068.5739963923.

Adding to 1220151630 its reverse (361510221), we get a palindrome (1581661851).

The spelling of 1220151630 in words is "one billion, two hundred twenty million, one hundred fifty-one thousand, six hundred thirty".