111210122101 has 8 divisors (see below), whose sum is σ = 120057575960. Its totient is φ = 102404500992.

The previous prime is 111210122071. The next prime is 111210122143. The reversal of 111210122101 is 101221012111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58250305201 + 52959816900 = 241351^2 + 230130^2 .

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 111210122101 - 2¹³ = 111210113909 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111210122161) 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, 10452660 + ... + 10463293.

It is an arithmetic number, because the mean of its divisors is an integer number (15007196995).

Almost surely, 2^111210122101 is an apocalyptic number.

It is an amenable number.

111210122101 is a deficient number, since it is larger than the sum of its proper divisors (8847453859).

111210122101 is a wasteful number, since it uses less digits than its factorization.

111210122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20916375.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111210122101 its reverse (101221012111), we get a palindrome (212431134212).

The spelling of 111210122101 in words is "one hundred eleven billion, two hundred ten million, one hundred twenty-two thousand, one hundred one".