11111111032212 has 18 divisors (see below), whose sum is σ = 28086419553738. Its totient is φ = 3703703677392.

The previous prime is 11111111032171. The next prime is 11111111032277. The reversal of 11111111032212 is 21223011111111.

11111111032212 is a `hidden beast` number, since 111 + 111 + 110 + 322 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11054002459536 + 57108572676 = 3324756^2 + 238974^2 .

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

It is a super-2 number, since 2×11111111032212² (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 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, 154320986523 + ... + 154320986594.

Almost surely, 2^{11111111032212} is an apocalyptic number.

11111111032212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11111111032212 is an abundant number, since it is smaller than the sum of its proper divisors (16975308521526).

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

11111111032212 is a wasteful number, since it uses less digits than its factorization.

11111111032212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308641973127 (or 308641973122 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 11111111032212 its reverse (21223011111111), we get a palindrome (32334122143323).

The spelling of 11111111032212 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, thirty-two thousand, two hundred twelve".