11001122221212 has 48 divisors (see below), whose sum is σ = 28528320038400. Its totient is φ = 3666154618800.

The previous prime is 11001122221169. The next prime is 11001122221223. The reversal of 11001122221212 is 21212222110011.

11001122221212 is a `hidden beast` number, since 110 + 0 + 1 + 122 + 221 + 212 = 666.

11001122221212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11858164 + ... + 12752187.

It is an arithmetic number, because the mean of its divisors is an integer number (594340000800).

Almost surely, 2^{11001122221212} is an apocalyptic number.

11001122221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11001122221212 is an abundant number, since it is smaller than the sum of its proper divisors (17527197817188).

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

11001122221212 is a wasteful number, since it uses less digits than its factorization.

11001122221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24614503 (or 24614495 counting only the distinct ones).

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

Adding to 11001122221212 its reverse (21212222110011), we get a palindrome (32213344331223).

The spelling of 11001122221212 in words is "eleven trillion, one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".