122200020222221 has 4 divisors (see below), whose sum is σ = 122200043569500. Its totient is φ = 122199996874944.

The previous prime is 122200020222151. The next prime is 122200020222239. The reversal of 122200020222221 is 122222020002221.

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 44916334861225 + 77283685360996 = 6701965^2 + 8791114^2 .

It is a cyclic number.

It is not a de Polignac number, because 122200020222221 - 2¹⁸ = 122200019960077 is a prime.

It is a super-2 number, since 2×122200020222221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122200020222193 and 122200020222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122200020222121) 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, 209555 + ... + 15634703.

It is an arithmetic number, because the mean of its divisors is an integer number (30550010892375).

Almost surely, 2^{122200020222221} is an apocalyptic number.

It is an amenable number.

122200020222221 is a deficient number, since it is larger than the sum of its proper divisors (23347279).

122200020222221 is an equidigital number, since it uses as much as digits as its factorization.

122200020222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23347278.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 122200020222221 its reverse (122222020002221), we get a palindrome (244422040224442).

The spelling of 122200020222221 in words is "one hundred twenty-two trillion, two hundred billion, twenty million, two hundred twenty-two thousand, two hundred twenty-one".