221155062048 has 126 divisors (see below), whose sum is σ = 653012000739. Its totient is φ = 73694411712.

The previous prime is 221155061927. The next prime is 221155062053. The reversal of 221155062048 is 840260551122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

221155062048 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 550 + 62 + 0 + 48 = 666.

It can be written as a sum of positive squares in only one way, i.e., 110577531024 + 110577531024 = 332532^2 + 332532^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332532.

It is a super-2 number, since 2×221155062048² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 71825373 + ... + 71828451.

Almost surely, 2^221155062048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221155062048

221155062048 is an abundant number, since it is smaller than the sum of its proper divisors (431856938691).

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

221155062048 is an frugal number, since it uses more digits than its factorization.

221155062048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186 (or 3084 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 221155062048 in words is "two hundred twenty-one billion, one hundred fifty-five million, sixty-two thousand, forty-eight".