1222132545540 has 144 divisors (see below), whose sum is σ = 3724713248256. Its totient is φ = 324360115200.

The previous prime is 1222132545503. The next prime is 1222132545581. The reversal of 1222132545540 is 455452312221.

1222132545540 is a `hidden beast` number, since 1 + 2 + 2 + 21 + 32 + 54 + 554 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 1222132545495 and 1222132545504.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35313645 + ... + 35348235.

It is an arithmetic number, because the mean of its divisors is an integer number (25866064224).

Almost surely, 2^{1222132545540} is an apocalyptic number.

1222132545540 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 1222132545540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862356624128).

1222132545540 is an abundant number, since it is smaller than the sum of its proper divisors (2502580702716).

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

1222132545540 is a wasteful number, since it uses less digits than its factorization.

1222132545540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35530 (or 35525 counting only the distinct ones).

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

Adding to 1222132545540 its reverse (455452312221), we get a palindrome (1677584857761).

The spelling of 1222132545540 in words is "one trillion, two hundred twenty-two billion, one hundred thirty-two million, five hundred forty-five thousand, five hundred forty".