10111320021 has 8 divisors (see below), whose sum is σ = 14707374624. Its totient is φ = 6128072720.

The previous prime is 10111320017. The next prime is 10111320059. The reversal of 10111320021 is 12002311101.

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

It is not a de Polignac number, because 10111320021 - 2² = 10111320017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10111319979 and 10111320006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111320071) 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, 153201786 + ... + 153201851.

It is an arithmetic number, because the mean of its divisors is an integer number (1838421828).

Almost surely, 2^10111320021 is an apocalyptic number.

10111320021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10111320021 is a deficient number, since it is larger than the sum of its proper divisors (4596054603).

10111320021 is a wasteful number, since it uses less digits than its factorization.

10111320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306403651.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 10111320021 its reverse (12002311101), we get a palindrome (22113631122).

The spelling of 10111320021 in words is "ten billion, one hundred eleven million, three hundred twenty thousand, twenty-one".