11420220220 has 24 divisors (see below), whose sum is σ = 25393196304. Its totient is φ = 4299376896.

The previous prime is 11420220181. The next prime is 11420220247. The reversal of 11420220220 is 2202202411.

It is a junction number, because it is equal to n+sod(n) for n = 11420220194 and 11420220203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16794102 + ... + 16794781.

It is an arithmetic number, because the mean of its divisors is an integer number (1058049846).

Almost surely, 2^11420220220 is an apocalyptic number.

11420220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11420220220 is an abundant number, since it is smaller than the sum of its proper divisors (13972976084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11420220220 is a wasteful number, since it uses less digits than its factorization.

11420220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33588909 (or 33588907 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 11420220220 its reverse (2202202411), we get a palindrome (13622422631).

The spelling of 11420220220 in words is "eleven billion, four hundred twenty million, two hundred twenty thousand, two hundred twenty".