111022022121221 has 4 divisors (see below), whose sum is σ = 111311896852992. Its totient is φ = 110732147389452.

The previous prime is 111022022121187. The next prime is 111022022121277. The reversal of 111022022121221 is 122121220220111.

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 not a de Polignac number, because 111022022121221 - 2¹⁴ = 111022022104837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111022022121193 and 111022022121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022022121721) 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, 144937365311 + ... + 144937366076.

It is an arithmetic number, because the mean of its divisors is an integer number (27827974213248).

Almost surely, 2^{111022022121221} is an apocalyptic number.

It is an amenable number.

111022022121221 is a deficient number, since it is larger than the sum of its proper divisors (289874731771).

111022022121221 is an equidigital number, since it uses as much as digits as its factorization.

111022022121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289874731770.

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

Adding to 111022022121221 its reverse (122121220220111), we get a palindrome (233143242341332).

The spelling of 111022022121221 in words is "one hundred eleven trillion, twenty-two billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".