1216460101 has 8 divisors (see below), whose sum is σ = 1234686744. Its totient is φ = 1198275840.

The previous prime is 1216460083. The next prime is 1216460117. The reversal of 1216460101 is 1010646121.

It can be written as a sum of positive squares in 4 ways, for example, as 104571076 + 1111889025 = 10226^2 + 33345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1216460101 - 2⁹ = 1216459589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216460701) 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, 49785 + ... + 70081.

It is an arithmetic number, because the mean of its divisors is an integer number (154335843).

Almost surely, 2^1216460101 is an apocalyptic number.

It is an amenable number.

1216460101 is a deficient number, since it is larger than the sum of its proper divisors (18226643).

1216460101 is an equidigital number, since it uses as much as digits as its factorization.

1216460101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21191.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1216460101 is about 34877.7880749339. The cubic root of 1216460101 is about 1067.4952624989.

The spelling of 1216460101 in words is "one billion, two hundred sixteen million, four hundred sixty thousand, one hundred one".