220990100111 has 4 divisors (see below), whose sum is σ = 241080109224. Its totient is φ = 200900091000.

The previous prime is 220990100077. The next prime is 220990100153. The reversal of 220990100111 is 111001099022.

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

It is a cyclic number.

It is not a de Polignac number, because 220990100111 - 2⁶ = 220990100047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220990100161) 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, 10045004540 + ... + 10045004561.

It is an arithmetic number, because the mean of its divisors is an integer number (60270027306).

Almost surely, 2^220990100111 is an apocalyptic number.

220990100111 is a deficient number, since it is larger than the sum of its proper divisors (20090009113).

220990100111 is a wasteful number, since it uses less digits than its factorization.

220990100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20090009112.

The product of its (nonzero) digits is 324, while the sum is 26.

Adding to 220990100111 its reverse (111001099022), we get a palindrome (331991199133).

The spelling of 220990100111 in words is "two hundred twenty billion, nine hundred ninety million, one hundred thousand, one hundred eleven".