111220001212011 has 16 divisors (see below), whose sum is σ = 157214206891008. Its totient is φ = 69815519503200.

The previous prime is 111220001212009. The next prime is 111220001212069. The reversal of 111220001212011 is 110212100022111.

It is a happy number.

It is not a de Polignac number, because 111220001212011 - 2¹ = 111220001212009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111220001212511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16160996445 + ... + 16161003326.

It is an arithmetic number, because the mean of its divisors is an integer number (9825887930688).

Almost surely, 2^{111220001212011} is an apocalyptic number.

111220001212011 is a deficient number, since it is larger than the sum of its proper divisors (45994205678997).

111220001212011 is a wasteful number, since it uses less digits than its factorization.

111220001212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32321999842.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111220001212011 its reverse (110212100022111), we get a palindrome (221432101234122).

The spelling of 111220001212011 in words is "one hundred eleven trillion, two hundred twenty billion, one million, two hundred twelve thousand, eleven".