10222222111221 has 8 divisors (see below), whose sum is σ = 14431372392384. Its totient is φ = 6413943285440.

The previous prime is 10222222111219. The next prime is 10222222111243. The reversal of 10222222111221 is 12211122222201.

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 10222222111221 - 2¹ = 10222222111219 is a prime.

It is a super-2 number, since 2×10222222111221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222222111261) 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, 100217863785 + ... + 100217863886.

It is an arithmetic number, because the mean of its divisors is an integer number (1803921549048).

Almost surely, 2^{10222222111221} is an apocalyptic number.

It is an amenable number.

10222222111221 is a deficient number, since it is larger than the sum of its proper divisors (4209150281163).

10222222111221 is a wasteful number, since it uses less digits than its factorization.

10222222111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200435727691.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 10222222111221 its reverse (12211122222201), we get a palindrome (22433344333422).

The spelling of 10222222111221 in words is "ten trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-one".