20220002111 has 4 divisors (see below), whose sum is σ = 20220430800. Its totient is φ = 20219573424.

The previous prime is 20220002081. The next prime is 20220002129. The reversal of 20220002111 is 11120002202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20220002111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220002092 and 20220002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220002161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133406 + ... + 241323.

It is an arithmetic number, because the mean of its divisors is an integer number (5055107700).

Almost surely, 2^20220002111 is an apocalyptic number.

20220002111 is a deficient number, since it is larger than the sum of its proper divisors (428689).

20220002111 is an equidigital number, since it uses as much as digits as its factorization.

20220002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428688.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20220002111 its reverse (11120002202), we get a palindrome (31340004313).

Subtracting from 20220002111 its reverse (11120002202), we obtain a palindrome (9099999909).

The spelling of 20220002111 in words is "twenty billion, two hundred twenty million, two thousand, one hundred eleven".