111120111210021 has 8 divisors (see below), whose sum is σ = 148160270501760. Its totient is φ = 74080013029152.

The previous prime is 111120111209999. The next prime is 111120111210041. The reversal of 111120111210021 is 120012111021111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111120111210021 - 2¹⁹ = 111120110685733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120111210041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10851760 + ... + 18439113.

It is an arithmetic number, because the mean of its divisors is an integer number (18520033812720).

Almost surely, 2^{111120111210021} is an apocalyptic number.

It is an amenable number.

111120111210021 is a deficient number, since it is larger than the sum of its proper divisors (37040159291739).

111120111210021 is a wasteful number, since it uses less digits than its factorization.

111120111210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555435.

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

Adding to 111120111210021 its reverse (120012111021111), we get a palindrome (231132222231132).

The spelling of 111120111210021 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred eleven million, two hundred ten thousand, twenty-one".