220120012011 has 4 divisors (see below), whose sum is σ = 293493349352. Its totient is φ = 146746674672.

The previous prime is 220120011973. The next prime is 220120012027. The reversal of 220120012011 is 110210021022.

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

It is not a de Polignac number, because 220120012011 - 2²¹ = 220117914859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220120012031) 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, 36686668666 + ... + 36686668671.

It is an arithmetic number, because the mean of its divisors is an integer number (73373337338).

Almost surely, 2^220120012011 is an apocalyptic number.

220120012011 is a deficient number, since it is larger than the sum of its proper divisors (73373337341).

220120012011 is an equidigital number, since it uses as much as digits as its factorization.

220120012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73373337340.

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

Adding to 220120012011 its reverse (110210021022), we get a palindrome (330330033033).

The spelling of 220120012011 in words is "two hundred twenty billion, one hundred twenty million, twelve thousand, eleven".