1216162130 has 32 divisors (see below), whose sum is σ = 2242411776. Its totient is φ = 474678784.

The previous prime is 1216162121. The next prime is 1216162151. The reversal of 1216162130 is 312616121.

It is a super-2 number, since 2×1216162130² = 2958100652892273800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1216162096 and 1216162105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159362 + ... + 166818.

It is an arithmetic number, because the mean of its divisors is an integer number (70075368).

Almost surely, 2^1216162130 is an apocalyptic number.

1216162130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216162130 is a deficient number, since it is larger than the sum of its proper divisors (1026249646).

1216162130 is a wasteful number, since it uses less digits than its factorization.

1216162130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1216162130 is about 34873.5161691505. The cubic root of 1216162130 is about 1067.4080946569.

Adding to 1216162130 its reverse (312616121), we get a palindrome (1528778251).

The spelling of 1216162130 in words is "one billion, two hundred sixteen million, one hundred sixty-two thousand, one hundred thirty".