1220127930 has 72 divisors (see below), whose sum is σ = 3690277812. Its totient is φ = 278885376.

The previous prime is 1220127911. The next prime is 1220127941. The reversal of 1220127930 is 397210221.

It can be written as a sum of positive squares in 2 ways, for example, as 1077349329 + 142778601 = 32823^2 + 11949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220127894 and 1220127903.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 133927 + ... + 142746.

Almost surely, 2^1220127930 is an apocalyptic number.

1220127930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220127930 is an abundant number, since it is smaller than the sum of its proper divisors (2470149882).

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

1220127930 is a wasteful number, since it uses less digits than its factorization.

1220127930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276700 (or 276690 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1220127930 is about 34930.3296577630. The cubic root of 1220127930 is about 1068.5670777529.

The spelling of 1220127930 in words is "one billion, two hundred twenty million, one hundred twenty-seven thousand, nine hundred thirty".