220021102011 has 4 divisors (see below), whose sum is σ = 293361469352. Its totient is φ = 146680734672.

The previous prime is 220021101983. The next prime is 220021102051. The reversal of 220021102011 is 110201120022.

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

It is not a de Polignac number, because 220021102011 - 2¹⁸ = 220020839867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220021102051) 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, 36670183666 + ... + 36670183671.

It is an arithmetic number, because the mean of its divisors is an integer number (73340367338).

Almost surely, 2^220021102011 is an apocalyptic number.

220021102011 is a deficient number, since it is larger than the sum of its proper divisors (73340367341).

220021102011 is an equidigital number, since it uses as much as digits as its factorization.

220021102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73340367340.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 220021102011 its reverse (110201120022), we get a palindrome (330222222033).

The spelling of 220021102011 in words is "two hundred twenty billion, twenty-one million, one hundred two thousand, eleven".