1222056445500 has 288 divisors, whose sum is σ = 4217831025408. Its totient is φ = 295398192000.

The previous prime is 1222056445451. The next prime is 1222056445513. The reversal of 1222056445500 is 55446502221.

1222056445500 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 0 + 5 + 644 + 5 + 5 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 17140927 + ... + 17212073.

It is an arithmetic number, because the mean of its divisors is an integer number (14645246616).

Almost surely, 2^{1222056445500} is an apocalyptic number.

1222056445500 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 1222056445500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2108915512704).

1222056445500 is an abundant number, since it is smaller than the sum of its proper divisors (2995774579908).

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

1222056445500 is a wasteful number, since it uses less digits than its factorization.

1222056445500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71530 (or 71515 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 1222056445500 in words is "one trillion, two hundred twenty-two billion, fifty-six million, four hundred forty-five thousand, five hundred".