111022221202121 has 4 divisors (see below), whose sum is σ = 111137032186752. Its totient is φ = 110907410217492.

The previous prime is 111022221202049. The next prime is 111022221202271. The reversal of 111022221202121 is 121202122220111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111022221202121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111022221202093 and 111022221202102.

It is not an unprimeable number, because it can be changed into a prime (111022221232121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57405490865 + ... + 57405492798.

It is an arithmetic number, because the mean of its divisors is an integer number (27784258046688).

Almost surely, 2^{111022221202121} is an apocalyptic number.

It is an amenable number.

111022221202121 is a deficient number, since it is larger than the sum of its proper divisors (114810984631).

111022221202121 is an equidigital number, since it uses as much as digits as its factorization.

111022221202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114810984630.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111022221202121 its reverse (121202122220111), we get a palindrome (232224343422232).

The spelling of 111022221202121 in words is "one hundred eleven trillion, twenty-two billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty-one".