1216628110120 has 32 divisors (see below), whose sum is σ = 2737647652320. Its totient is φ = 486609572160.

The previous prime is 1216628110091. The next prime is 1216628110121. The reversal of 1216628110120 is 210118266121.

It is not an unprimeable number, because it can be changed into a prime (1216628110121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 827142 + ... + 1765621.

It is an arithmetic number, because the mean of its divisors is an integer number (85551489135).

Almost surely, 2^{1216628110120} is an apocalyptic number.

1216628110120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216628110120 is an abundant number, since it is smaller than the sum of its proper divisors (1521019542200).

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

1216628110120 is a wasteful number, since it uses less digits than its factorization.

1216628110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604505 (or 2604501 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 1216628110120 in words is "one trillion, two hundred sixteen billion, six hundred twenty-eight million, one hundred ten thousand, one hundred twenty".