1216676101 has 2 divisors, whose sum is σ = 1216676102. Its totient is φ = 1216676100.

The previous prime is 1216676051. The next prime is 1216676113. The reversal of 1216676101 is 1016766121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972504225 + 244171876 = 31185^2 + 15626^2 .

It is a cyclic number.

It is not a de Polignac number, because 1216676101 - 2²¹ = 1214578949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216676161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608338050 + 608338051.

It is an arithmetic number, because the mean of its divisors is an integer number (608338051).

Almost surely, 2^1216676101 is an apocalyptic number.

It is an amenable number.

1216676101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216676101 is an equidigital number, since it uses as much as digits as its factorization.

1216676101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1216676101 is about 34880.8844641302. The cubic root of 1216676101 is about 1067.5584418092.

The spelling of 1216676101 in words is "one billion, two hundred sixteen million, six hundred seventy-six thousand, one hundred one".