10221111993 has 8 divisors (see below), whose sum is σ = 13851561856. Its totient is φ = 6702368400.

The previous prime is 10221111961. The next prime is 10221112003. The reversal of 10221111993 is 39911112201.

10221111993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10221111993 - 2⁵ = 10221111961 is a prime.

It is a super-3 number, since 3×10221111993³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10221111993.

It is not an unprimeable number, because it can be changed into a prime (10221131993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27926353 + ... + 27926718.

It is an arithmetic number, because the mean of its divisors is an integer number (1731445232).

Almost surely, 2^10221111993 is an apocalyptic number.

It is an amenable number.

10221111993 is a deficient number, since it is larger than the sum of its proper divisors (3630449863).

10221111993 is an equidigital number, since it uses as much as digits as its factorization.

10221111993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55853135.

The product of its (nonzero) digits is 972, while the sum is 30.

The spelling of 10221111993 in words is "ten billion, two hundred twenty-one million, one hundred eleven thousand, nine hundred ninety-three".