221081911058 has 6 divisors (see below), whose sum is σ = 331623864021. Its totient is φ = 110540623052.

The previous prime is 221081911033. The next prime is 221081911091. The reversal of 221081911058 is 850119180122.

221081911058 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 125141185009 + 95940726049 = 353753^2 + 309743^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332477.

It is a super-2 number, since 2×221081911058² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 498716 + ... + 831192.

Almost surely, 2^221081911058 is an apocalyptic number.

221081911058 is a deficient number, since it is larger than the sum of its proper divisors (110541952963).

221081911058 is an frugal number, since it uses more digits than its factorization.

221081911058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664956 (or 332479 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 38.

The spelling of 221081911058 in words is "two hundred twenty-one billion, eighty-one million, nine hundred eleven thousand, fifty-eight".