111211101012 has 48 divisors (see below), whose sum is σ = 286001214912. Its totient is φ = 33352903680.

The previous prime is 111211101011. The next prime is 111211101061. The reversal of 111211101012 is 210101112111.

It is a super-3 number, since 3×111211101012³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211101011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4330023 + ... + 4355630.

It is an arithmetic number, because the mean of its divisors is an integer number (5958358644).

Almost surely, 2^111211101012 is an apocalyptic number.

111211101012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111211101012 is an abundant number, since it is smaller than the sum of its proper divisors (174790113900).

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

111211101012 is a wasteful number, since it uses less digits than its factorization.

111211101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685768 (or 8685766 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111211101012 its reverse (210101112111), we get a palindrome (321312213123).

The spelling of 111211101012 in words is "one hundred eleven billion, two hundred eleven million, one hundred one thousand, twelve".