11122111021212 has 18 divisors (see below), whose sum is σ = 28114225081488. Its totient is φ = 3707370340392.

The previous prime is 11122111021199. The next prime is 11122111021247. The reversal of 11122111021212 is 21212011122111.

It is a happy number.

11122111021212 is a `hidden beast` number, since 111 + 221 + 110 + 212 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 154473764148 + ... + 154473764219.

It is an arithmetic number, because the mean of its divisors is an integer number (1561901393416).

Almost surely, 2^{11122111021212} is an apocalyptic number.

11122111021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11122111021212 is an abundant number, since it is smaller than the sum of its proper divisors (16992114060276).

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

11122111021212 is a wasteful number, since it uses less digits than its factorization.

11122111021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308947528377 (or 308947528372 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11122111021212 its reverse (21212011122111), we get a palindrome (32334122143323).

The spelling of 11122111021212 in words is "eleven trillion, one hundred twenty-two billion, one hundred eleven million, twenty-one thousand, two hundred twelve".