11220455012 has 12 divisors (see below), whose sum is σ = 21146242236. Its totient is φ = 5178671520.

The previous prime is 11220455011. The next prime is 11220455023. The reversal of 11220455012 is 21055402211.

It can be written as a sum of positive squares in 2 ways, for example, as 1938288676 + 9282166336 = 44026^2 + 96344^2 .

It is a super-2 number, since 2×11220455012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11220455011) 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, 107888939 + ... + 107889042.

It is an arithmetic number, because the mean of its divisors is an integer number (1762186853).

Almost surely, 2^11220455012 is an apocalyptic number.

It is an amenable number.

11220455012 is a deficient number, since it is larger than the sum of its proper divisors (9925787224).

11220455012 is a wasteful number, since it uses less digits than its factorization.

11220455012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215777998 (or 215777996 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 11220455012 its reverse (21055402211), we get a palindrome (32275857223).

The spelling of 11220455012 in words is "eleven billion, two hundred twenty million, four hundred fifty-five thousand, twelve".