122221022102021 has 4 divisors (see below), whose sum is σ = 122432843631372. Its totient is φ = 122009200572672.

The previous prime is 122221022101979. The next prime is 122221022102033. The reversal of 122221022102021 is 120201220122221.

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 120095954968900 + 2125067133121 = 10958830^2 + 1457761^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221022102021 - 2²⁶ = 122220954993157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221022101984 and 122221022102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211022102021) 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, 105910763810 + ... + 105910764963.

It is an arithmetic number, because the mean of its divisors is an integer number (30608210907843).

Almost surely, 2^{122221022102021} is an apocalyptic number.

It is an amenable number.

122221022102021 is a deficient number, since it is larger than the sum of its proper divisors (211821529351).

122221022102021 is an equidigital number, since it uses as much as digits as its factorization.

122221022102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211821529350.

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

Adding to 122221022102021 its reverse (120201220122221), we get a palindrome (242422242224242).

The spelling of 122221022102021 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, twenty-two million, one hundred two thousand, twenty-one".