1216601088 has 44 divisors (see below), whose sum is σ = 3242693640. Its totient is φ = 405532672.

The previous prime is 1216601081. The next prime is 1216601101. The reversal of 1216601088 is 8801066121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216601081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194943 + ... + 201086.

Almost surely, 2^1216601088 is an apocalyptic number.

It is an amenable number.

1216601088 is an abundant number, since it is smaller than the sum of its proper divisors (2026092552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1216601088 is an equidigital number, since it uses as much as digits as its factorization.

1216601088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396052 (or 396034 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 1216601088 is about 34879.8091737899. The cubic root of 1216601088 is about 1067.5365015938.

The spelling of 1216601088 in words is "one billion, two hundred sixteen million, six hundred one thousand, eighty-eight".