1221414116 has 12 divisors (see below), whose sum is σ = 2301895932. Its totient is φ = 563729568.

The previous prime is 1221414101. The next prime is 1221414143. The reversal of 1221414116 is 6114141221.

It can be written as a sum of positive squares in 2 ways, for example, as 95140516 + 1126273600 = 9754^2 + 33560^2 .

It is a super-2 number, since 2×1221414116² = 2983704885528122912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221414091 and 1221414100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11744315 + ... + 11744418.

It is an arithmetic number, because the mean of its divisors is an integer number (191824661).

Almost surely, 2^1221414116 is an apocalyptic number.

It is an amenable number.

1221414116 is a deficient number, since it is larger than the sum of its proper divisors (1080481816).

1221414116 is a wasteful number, since it uses less digits than its factorization.

1221414116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23488750 (or 23488748 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 1221414116 is about 34948.7355422195. The cubic root of 1221414116 is about 1068.9424190964.

Adding to 1221414116 its reverse (6114141221), we get a palindrome (7335555337).

The spelling of 1221414116 in words is "one billion, two hundred twenty-one million, four hundred fourteen thousand, one hundred sixteen".