221081911059 has 8 divisors (see below), whose sum is σ = 296172924352. Its totient is φ = 146689419240.

The previous prime is 221081911033. The next prime is 221081911091. The reversal of 221081911059 is 950119180122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221081911059 - 2⁹ = 221081910547 is a prime.

It is a super-2 number, since 2×221081911059² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221081911459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174629629 + ... + 174630894.

It is an arithmetic number, because the mean of its divisors is an integer number (37021615544).

Almost surely, 2^221081911059 is an apocalyptic number.

221081911059 is a deficient number, since it is larger than the sum of its proper divisors (75091013293).

221081911059 is a wasteful number, since it uses less digits than its factorization.

221081911059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349260737.

The product of its (nonzero) digits is 12960, while the sum is 39.

The spelling of 221081911059 in words is "two hundred twenty-one billion, eighty-one million, nine hundred eleven thousand, fifty-nine".