22221221202111 has 8 divisors (see below), whose sum is σ = 30429059664304. Its totient is φ = 14413765104000.

The previous prime is 22221221202107. The next prime is 22221221202119. The reversal of 22221221202111 is 11120212212222.

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

It is not a de Polignac number, because 22221221202111 - 2² = 22221221202107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221221202119) 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, 100095590890 + ... + 100095591111.

It is an arithmetic number, because the mean of its divisors is an integer number (3803632458038).

Almost surely, 2^{22221221202111} is an apocalyptic number.

22221221202111 is a deficient number, since it is larger than the sum of its proper divisors (8207838462193).

22221221202111 is a wasteful number, since it uses less digits than its factorization.

22221221202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200191182041.

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

Adding to 22221221202111 its reverse (11120212212222), we get a palindrome (33341433414333).

The spelling of 22221221202111 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred two thousand, one hundred eleven".