22221202202211 has 4 divisors (see below), whose sum is σ = 29628269602952. Its totient is φ = 14814134801472.

The previous prime is 22221202202207. The next prime is 22221202202239. The reversal of 22221202202211 is 11220220212222.

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

It is not a de Polignac number, because 22221202202211 - 2² = 22221202202207 is a prime.

It is a super-2 number, since 2×22221202202211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221202202911) 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, 3703533700366 + ... + 3703533700371.

It is an arithmetic number, because the mean of its divisors is an integer number (7407067400738).

Almost surely, 2^{22221202202211} is an apocalyptic number.

22221202202211 is a deficient number, since it is larger than the sum of its proper divisors (7407067400741).

22221202202211 is an equidigital number, since it uses as much as digits as its factorization.

22221202202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7407067400740.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22221202202211 its reverse (11220220212222), we get a palindrome (33441422414433).

The spelling of 22221202202211 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred two million, two hundred two thousand, two hundred eleven".