11011220010012 has 24 divisors (see below), whose sum is σ = 25707224382336. Its totient is φ = 3668352713968.

The previous prime is 11011220009957. The next prime is 11011220010013. The reversal of 11011220010012 is 21001002211011.

It is a super-2 number, since 2×11011220010012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 11011220010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011220010013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256722168 + ... + 256765055.

It is an arithmetic number, because the mean of its divisors is an integer number (1071134349264).

Almost surely, 2^{11011220010012} is an apocalyptic number.

11011220010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11011220010012 is an abundant number, since it is smaller than the sum of its proper divisors (14696004372324).

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

11011220010012 is a wasteful number, since it uses less digits than its factorization.

11011220010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513489017 (or 513489015 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11011220010012 its reverse (21001002211011), we get a palindrome (32012222221023).

The spelling of 11011220010012 in words is "eleven trillion, eleven billion, two hundred twenty million, ten thousand, twelve".