1216813230000 has 150 divisors (see below), whose sum is σ = 4255371941964. Its totient is φ = 324483504000.

The previous prime is 1216813229981. The next prime is 1216813230019. The reversal of 1216813230000 is 323186121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1216813229981) and next prime (1216813230019).

It is a tau number, because it is divible by the number of its divisors (150).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 6670074 + ... + 6850073.

Almost surely, 2^{1216813230000} is an apocalyptic number.

1216813230000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216813230000 is an abundant number, since it is smaller than the sum of its proper divisors (3038558711964).

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

1216813230000 is a wasteful number, since it uses less digits than its factorization.

1216813230000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13520181 (or 13520157 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 1216813230000 in words is "one trillion, two hundred sixteen billion, eight hundred thirteen million, two hundred thirty thousand".