22222121222211 has 8 divisors (see below), whose sum is σ = 29629645047120. Its totient is φ = 14814672439392.

The previous prime is 22222121222209. The next prime is 22222121222251. The reversal of 22222121222211 is 11222212122222.

It is a happy number.

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

It is not a de Polignac number, because 22222121222211 - 2¹ = 22222121222209 is a prime.

It is a super-2 number, since 2×22222121222211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22222121222251) 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, 18065880 + ... + 19256693.

It is an arithmetic number, because the mean of its divisors is an integer number (3703705630890).

Almost surely, 2^{22222121222211} is an apocalyptic number.

22222121222211 is a deficient number, since it is larger than the sum of its proper divisors (7407523824909).

22222121222211 is a wasteful number, since it uses less digits than its factorization.

22222121222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37521045.

The product of its digits is 1024, while the sum is 24.

Adding to 22222121222211 its reverse (11222212122222), we get a palindrome (33444333344433).

It can be divided in two parts, 2222212122221 and 1, that added together give a palindrome (2222212122222).

The spelling of 22222121222211 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred eleven".