1222222221101 has 16 divisors (see below), whose sum is σ = 1421139953280. Its totient is φ = 1029459594240.

The previous prime is 1222222221071. The next prime is 1222222221109. The reversal of 1222222221101 is 1011222222221.

It is not a de Polignac number, because 1222222221101 - 2¹⁰ = 1222222220077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222222221109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2994020 + ... + 3377661.

It is an arithmetic number, because the mean of its divisors is an integer number (88821247080).

Almost surely, 2^{1222222221101} is an apocalyptic number.

It is an amenable number.

1222222221101 is a deficient number, since it is larger than the sum of its proper divisors (198917732179).

1222222221101 is an equidigital number, since it uses as much as digits as its factorization.

1222222221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6372164.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1222222221101 its reverse (1011222222221), we get a palindrome (2233444443322).

It can be divided in two parts, 1222222221 and 101, that multiplied together give a palindrome (123444444321).

The spelling of 1222222221101 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred one".