23222121211 has 4 divisors (see below), whose sum is σ = 23225592352. Its totient is φ = 23218650072.

The previous prime is 23222121199. The next prime is 23222121253. The reversal of 23222121211 is 11212122232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23222121211 - 2¹¹ = 23222119163 is a prime.

It is a super-2 number, since 2×23222121211² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23222121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1725516 + ... + 1738921.

It is an arithmetic number, because the mean of its divisors is an integer number (5806398088).

Almost surely, 2^23222121211 is an apocalyptic number.

23222121211 is a deficient number, since it is larger than the sum of its proper divisors (3471141).

23222121211 is an equidigital number, since it uses as much as digits as its factorization.

23222121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471140.

The product of its digits is 192, while the sum is 19.

Adding to 23222121211 its reverse (11212122232), we get a palindrome (34434243443).

The spelling of 23222121211 in words is "twenty-three billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".