111120101011221 has 16 divisors (see below), whose sum is σ = 151013292179904. Its totient is φ = 72654556800384.

The previous prime is 111120101011193. The next prime is 111120101011243. The reversal of 111120101011221 is 122110101021111.

It is not a de Polignac number, because 111120101011221 - 2²³ = 111120092622613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111120101011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120101018221) 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, 133108651 + ... + 133940856.

It is an arithmetic number, because the mean of its divisors is an integer number (9438330761244).

Almost surely, 2^{111120101011221} is an apocalyptic number.

It is an amenable number.

111120101011221 is a deficient number, since it is larger than the sum of its proper divisors (39893191168683).

111120101011221 is a wasteful number, since it uses less digits than its factorization.

111120101011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267052180.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111120101011221 its reverse (122110101021111), we get a palindrome (233230202032332).

The spelling of 111120101011221 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred one million, eleven thousand, two hundred twenty-one".