10220021111 has 8 divisors (see below), whose sum is σ = 10428269184. Its totient is φ = 10012344160.

The previous prime is 10220021107. The next prime is 10220021129. The reversal of 10220021111 is 11112002201.

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

It is a cyclic number.

It is not a de Polignac number, because 10220021111 - 2² = 10220021107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220021092 and 10220021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220021011) 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, 106535 + ... + 178296.

It is an arithmetic number, because the mean of its divisors is an integer number (1303533648).

Almost surely, 2^10220021111 is an apocalyptic number.

10220021111 is a deficient number, since it is larger than the sum of its proper divisors (208248073).

10220021111 is an equidigital number, since it uses as much as digits as its factorization.

10220021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285561.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10220021111 its reverse (11112002201), we get a palindrome (21332023312).

The spelling of 10220021111 in words is "ten billion, two hundred twenty million, twenty-one thousand, one hundred eleven".