111121011211012 has 96 divisors (see below), whose sum is σ = 228404591420544. Its totient is φ = 46737910732800.

The previous prime is 111121011210991. The next prime is 111121011211057. The reversal of 111121011211012 is 210112110121111.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100424523 + ... + 101525005.

It is an arithmetic number, because the mean of its divisors is an integer number (2379214493964).

Almost surely, 2^{111121011211012} is an apocalyptic number.

It is an amenable number.

111121011211012 is an abundant number, since it is smaller than the sum of its proper divisors (117283580209532).

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

111121011211012 is a wasteful number, since it uses less digits than its factorization.

111121011211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102789 (or 1102787 counting only the distinct ones).

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

Adding to 111121011211012 its reverse (210112110121111), we get a palindrome (321233121332123).

It can be divided in two parts, 1111 and 21011211012, that multiplied together give a palindrome (23343455434332).

The spelling of 111121011211012 in words is "one hundred eleven trillion, one hundred twenty-one billion, eleven million, two hundred eleven thousand, twelve".