11212111011112 has 256 divisors, whose sum is σ = 24731879040000. Its totient is φ = 4751152623360.

The previous prime is 11212111011103. The next prime is 11212111011121. The reversal of 11212111011112 is 21111011121211.

It is an interprime number because it is at equal distance from previous prime (11212111011103) and next prime (11212111011121).

It is a super-2 number, since 2×11212111011112² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3398637639 + ... + 3398640937.

It is an arithmetic number, because the mean of its divisors is an integer number (96608902500).

Almost surely, 2^{11212111011112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212111011112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12365939520000).

11212111011112 is an abundant number, since it is smaller than the sum of its proper divisors (13519768028888).

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

11212111011112 is a wasteful number, since it uses less digits than its factorization.

11212111011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621 (or 3595 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11212111011112 its reverse (21111011121211), we get a palindrome (32323122132323).

The spelling of 11212111011112 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, eleven thousand, one hundred twelve".