111021010321 has 8 divisors (see below), whose sum is σ = 120619152360. Its totient is φ = 101574020352.

The previous prime is 111021010291. The next prime is 111021010333. The reversal of 111021010321 is 123010120111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18580688721 + 92440321600 = 136311^2 + 304040^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 111021010321 - 2¹⁵ = 111020977553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111021010351) 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, 37786486 + ... + 37789423.

It is an arithmetic number, because the mean of its divisors is an integer number (15077394045).

Almost surely, 2^111021010321 is an apocalyptic number.

It is an amenable number.

111021010321 is a deficient number, since it is larger than the sum of its proper divisors (9598142039).

111021010321 is a wasteful number, since it uses less digits than its factorization.

111021010321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75576035.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111021010321 its reverse (123010120111), we get a palindrome (234031130432).

The spelling of 111021010321 in words is "one hundred eleven billion, twenty-one million, ten thousand, three hundred twenty-one".