1216017106 has 8 divisors (see below), whose sum is σ = 1931321340. Its totient is φ = 572243328.

The previous prime is 1216017091. The next prime is 1216017139. The reversal of 1216017106 is 6017106121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1125938025 + 90079081 = 33555^2 + 9491^2 .

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

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, 17882571 + ... + 17882638.

Almost surely, 2^1216017106 is an apocalyptic number.

1216017106 is a deficient number, since it is larger than the sum of its proper divisors (715304234).

1216017106 is a wasteful number, since it uses less digits than its factorization.

1216017106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35765228.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1216017106 is about 34871.4368215593. The cubic root of 1216017106 is about 1067.3656644739.

The spelling of 1216017106 in words is "one billion, two hundred sixteen million, seventeen thousand, one hundred six".