1540220304222 has 96 divisors (see below), whose sum is σ = 3733248074400. Its totient is φ = 456072228864.

The previous prime is 1540220304199. The next prime is 1540220304251. The reversal of 1540220304222 is 2224030220451.

1540220304222 is a `hidden beast` number, since 1 + 5 + 402 + 2 + 0 + 30 + 4 + 222 = 666.

It is a congruent number.

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, 1071558 + ... + 2056374.

It is an arithmetic number, because the mean of its divisors is an integer number (38888000775).

Almost surely, 2^{1540220304222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1540220304222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1866624037200).

1540220304222 is an abundant number, since it is smaller than the sum of its proper divisors (2193027770178).

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

1540220304222 is a wasteful number, since it uses less digits than its factorization.

1540220304222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985130 (or 985127 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 1540220304222 its reverse (2224030220451), we get a palindrome (3764250524673).

The spelling of 1540220304222 in words is "one trillion, five hundred forty billion, two hundred twenty million, three hundred four thousand, two hundred twenty-two".