111322331021 has 32 divisors (see below), whose sum is σ = 129074881536. Its totient is φ = 94887936000.

The previous prime is 111322330991. The next prime is 111322331023. The reversal of 111322331021 is 120133223111.

It is a happy number.

It is not a de Polignac number, because 111322331021 - 2⁶ = 111322330957 is a prime.

It is a super-2 number, since 2×111322331021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111322330984 and 111322331002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111322331023) 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, 96549581 + ... + 96550733.

It is an arithmetic number, because the mean of its divisors is an integer number (4033590048).

Almost surely, 2^111322331021 is an apocalyptic number.

111322331021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111322331021 is a deficient number, since it is larger than the sum of its proper divisors (17752550515).

111322331021 is a wasteful number, since it uses less digits than its factorization.

111322331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111322331021 its reverse (120133223111), we get a palindrome (231455554132).

The spelling of 111322331021 in words is "one hundred eleven billion, three hundred twenty-two million, three hundred thirty-one thousand, twenty-one".