1213227892800 has 2016 divisors, whose sum is σ = 5646058629120. Its totient is φ = 248016384000.

The previous prime is 1213227892777. The next prime is 1213227892831. The reversal of 1213227892800 is 82987223121.

1213227892800 is a `hidden beast` number, since 1 + 213 + 2 + 278 + 92 + 80 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 2597918167 + ... + 2597918633.

It is an arithmetic number, because the mean of its divisors is an integer number (2800624320).

Almost surely, 2^{1213227892800} is an apocalyptic number.

1213227892800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213227892800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2823029314560).

1213227892800 is an abundant number, since it is smaller than the sum of its proper divisors (4432830736320).

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

1213227892800 is a wasteful number, since it uses less digits than its factorization.

1213227892800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 1213227892800 in words is "one trillion, two hundred thirteen billion, two hundred twenty-seven million, eight hundred ninety-two thousand, eight hundred".