111122010211212 has 1152 divisors, whose sum is σ = 391428281008128. Its totient is φ = 25649751859200.

The previous prime is 111122010211193. The next prime is 111122010211231. The reversal of 111122010211212 is 212112010221111.

It is a happy number.

111122010211212 is a `hidden beast` number, since 1 + 1 + 11 + 220 + 10 + 211 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (111122010211193) and next prime (111122010211231).

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

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 91609241118 + ... + 91609242330.

Almost surely, 2^{111122010211212} is an apocalyptic number.

111122010211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111122010211212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195714140504064).

111122010211212 is an abundant number, since it is smaller than the sum of its proper divisors (280306270796916).

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

111122010211212 is a wasteful number, since it uses less digits than its factorization.

111122010211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959 (or 1954 counting only the distinct ones).

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

Adding to 111122010211212 its reverse (212112010221111), we get a palindrome (323234020432323).

The spelling of 111122010211212 in words is "one hundred eleven trillion, one hundred twenty-two billion, ten million, two hundred eleven thousand, two hundred twelve".