11222121102012 has 144 divisors (see below), whose sum is σ = 28829779058080. Its totient is φ = 3680213336064.

The previous prime is 11222121102011. The next prime is 11222121102037. The reversal of 11222121102012 is 21020112122211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222121102011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 737465028 + ... + 737480244.

Almost surely, 2^{11222121102012} is an apocalyptic number.

11222121102012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11222121102012 is an abundant number, since it is smaller than the sum of its proper divisors (17607657956068).

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

11222121102012 is a wasteful number, since it uses less digits than its factorization.

11222121102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16652 (or 16647 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11222121102012 its reverse (21020112122211), we get a palindrome (32242233224223).

The spelling of 11222121102012 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred two thousand, twelve".