122221122221 has 32 divisors (see below), whose sum is σ = 138459428352. Its totient is φ = 106920000000.

The previous prime is 122221122119. The next prime is 122221122259.

122221122221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 122221122221 - 2¹⁴ = 122221105837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221122193 and 122221122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221122281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12339371 + ... + 12349271.

It is an arithmetic number, because the mean of its divisors is an integer number (4326857136).

Almost surely, 2^122221122221 is an apocalyptic number.

122221122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122221122221 is a deficient number, since it is larger than the sum of its proper divisors (16238306131).

122221122221 is a wasteful number, since it uses less digits than its factorization.

122221122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10325.

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

It can be divided in two parts, 122221 and 122221, that added together give a palindrome (244442).

The spelling of 122221122221 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-one".