111220011211012 has 72 divisors (see below), whose sum is σ = 216319100794776. Its totient is φ = 49993025280000.

The previous prime is 111220011211007. The next prime is 111220011211013. The reversal of 111220011211012 is 210112110022111.

It can be written as a sum of positive squares in 4 ways, for example, as 15312148129476 + 95907863081536 = 3913074^2 + 9793256^2 .

It is not an unprimeable number, because it can be changed into a prime (111220011211013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38748148 + ... + 41519380.

It is an arithmetic number, because the mean of its divisors is an integer number (3004431955483).

Almost surely, 2^{111220011211012} is an apocalyptic number.

It is an amenable number.

111220011211012 is a deficient number, since it is larger than the sum of its proper divisors (105099089583764).

111220011211012 is a wasteful number, since it uses less digits than its factorization.

111220011211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772181 (or 2772168 counting only the distinct ones).

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

Adding to 111220011211012 its reverse (210112110022111), we get a palindrome (321332121233123).

The spelling of 111220011211012 in words is "one hundred eleven trillion, two hundred twenty billion, eleven million, two hundred eleven thousand, twelve".