111420145011 has 32 divisors (see below), whose sum is σ = 173109726720. Its totient is φ = 62422873344.

The previous prime is 111420144991. The next prime is 111420145051. The reversal of 111420145011 is 110541024111.

It is not a de Polignac number, because 111420145011 - 2¹⁴ = 111420128627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (111420145051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1560000 + ... + 1629858.

It is an arithmetic number, because the mean of its divisors is an integer number (5409678960).

Almost surely, 2^111420145011 is an apocalyptic number.

111420145011 is a deficient number, since it is larger than the sum of its proper divisors (61689581709).

111420145011 is a wasteful number, since it uses less digits than its factorization.

111420145011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71355.

The product of its (nonzero) digits is 160, while the sum is 21.

Adding to 111420145011 its reverse (110541024111), we get a palindrome (221961169122).

The spelling of 111420145011 in words is "one hundred eleven billion, four hundred twenty million, one hundred forty-five thousand, eleven".