22102022111221 has 8 divisors (see below), whose sum is σ = 23802221280824. Its totient is φ = 20401829173440.

The previous prime is 22102022111177. The next prime is 22102022111227. The reversal of 22102022111221 is 12211122020122.

It can be written as a sum of positive squares in 4 ways, for example, as 1501815936196 + 20600206175025 = 1225486^2 + 4538745^2 .

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

It is not a de Polignac number, because 22102022111221 - 2¹⁵ = 22102022078453 is a prime.

It is a super-2 number, since 2×22102022111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102022111227) 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, 7963291 + ... + 10373911.

It is an arithmetic number, because the mean of its divisors is an integer number (2975277660103).

Almost surely, 2^{22102022111221} is an apocalyptic number.

It is an amenable number.

22102022111221 is a deficient number, since it is larger than the sum of its proper divisors (1700199169603).

22102022111221 is a wasteful number, since it uses less digits than its factorization.

22102022111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115911.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22102022111221 its reverse (12211122020122), we get a palindrome (34313144131343).

The spelling of 22102022111221 in words is "twenty-two trillion, one hundred two billion, twenty-two million, one hundred eleven thousand, two hundred twenty-one".