1216170701 has 16 divisors (see below), whose sum is σ = 1369073664. Its totient is φ = 1074188544.

The previous prime is 1216170691. The next prime is 1216170707. The reversal of 1216170701 is 1070716121.

It is a cyclic number.

It is not a de Polignac number, because 1216170701 - 2¹⁰ = 1216169677 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 (1216170707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8621 + ... + 50066.

It is an arithmetic number, because the mean of its divisors is an integer number (85567104).

Almost surely, 2^1216170701 is an apocalyptic number.

It is an amenable number.

1216170701 is a deficient number, since it is larger than the sum of its proper divisors (152902963).

1216170701 is a wasteful number, since it uses less digits than its factorization.

1216170701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58780.

The product of its (nonzero) digits is 588, while the sum is 26.

The square root of 1216170701 is about 34873.6390558829. The cubic root of 1216170701 is about 1067.4106021990.

Adding to 1216170701 its reverse (1070716121), we get a palindrome (2286886822).

The spelling of 1216170701 in words is "one billion, two hundred sixteen million, one hundred seventy thousand, seven hundred one".