22212101231 has 4 divisors (see below), whose sum is σ = 22244911512. Its totient is φ = 22179290952.

The previous prime is 22212101209. The next prime is 22212101237. The reversal of 22212101231 is 13210121222.

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 22212101231 - 2²² = 22207906927 is a prime.

It is a super-2 number, since 2×22212101231² (a number of 21 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 (22212101237) 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, 16404125 + ... + 16405478.

It is an arithmetic number, because the mean of its divisors is an integer number (5561227878).

Almost surely, 2^22212101231 is an apocalyptic number.

22212101231 is a deficient number, since it is larger than the sum of its proper divisors (32810281).

22212101231 is an equidigital number, since it uses as much as digits as its factorization.

22212101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32810280.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22212101231 its reverse (13210121222), we get a palindrome (35422222453).

The spelling of 22212101231 in words is "twenty-two billion, two hundred twelve million, one hundred one thousand, two hundred thirty-one".