1227214851840 has 864 divisors, whose sum is σ = 4657837766400. Its totient is φ = 308511866880.

The previous prime is 1227214851839. The next prime is 1227214851869. The reversal of 1227214851840 is 481584127221.

1227214851840 is a `hidden beast` number, since 1 + 22 + 72 + 1 + 4 + 8 + 518 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1660642191 + ... + 1660642929.

Almost surely, 2^{1227214851840} is an apocalyptic number.

1227214851840 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 1227214851840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2328918883200).

1227214851840 is an abundant number, since it is smaller than the sum of its proper divisors (3430622914560).

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

1227214851840 is an equidigital number, since it uses as much as digits as its factorization.

1227214851840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1049 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 1227214851840 in words is "one trillion, two hundred twenty-seven billion, two hundred fourteen million, eight hundred fifty-one thousand, eight hundred forty".