11022222012012 has 36 divisors (see below), whose sum is σ = 27893139137136. Its totient is φ = 3669931858080.

The previous prime is 11022222011993. The next prime is 11022222012013. The reversal of 11022222012012 is 21021022222011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×11022222012012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11022222012013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172557039 + ... + 172620902.

It is an arithmetic number, because the mean of its divisors is an integer number (774809420476).

Almost surely, 2^{11022222012012} is an apocalyptic number.

11022222012012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11022222012012 is an abundant number, since it is smaller than the sum of its proper divisors (16870917125124).

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

11022222012012 is a wasteful number, since it uses less digits than its factorization.

11022222012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345178838 (or 345178833 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11022222012012 its reverse (21021022222011), we get a palindrome (32043244234023).

The spelling of 11022222012012 in words is "eleven trillion, twenty-two billion, two hundred twenty-two million, twelve thousand, twelve".