22211211101 has 4 divisors (see below), whose sum is σ = 22211655612. Its totient is φ = 22210766592.

The previous prime is 22211211097. The next prime is 22211211103. The reversal of 22211211101 is 10111211222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10948483225 + 11262727876 = 104635^2 + 106126^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211211101 - 2² = 22211211097 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 (22211211103) 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, 136196 + ... + 250941.

It is an arithmetic number, because the mean of its divisors is an integer number (5552913903).

Almost surely, 2^22211211101 is an apocalyptic number.

It is an amenable number.

22211211101 is a deficient number, since it is larger than the sum of its proper divisors (444511).

22211211101 is an equidigital number, since it uses as much as digits as its factorization.

22211211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444510.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22211211101 its reverse (10111211222), we get a palindrome (32322422323).

It can be divided in two parts, 2221121 and 1101, that added together give a palindrome (2222222).

The spelling of 22211211101 in words is "twenty-two billion, two hundred eleven million, two hundred eleven thousand, one hundred one".