122022211021 has 4 divisors (see below), whose sum is σ = 126229873500. Its totient is φ = 117814548544.

The previous prime is 122022211019. The next prime is 122022211037. The reversal of 122022211021 is 120112220221.

It is a happy number.

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 99420396100 + 22601814921 = 315310^2 + 150339^2 .

It is a cyclic number.

It is not a de Polignac number, because 122022211021 - 2¹ = 122022211019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122022210986 and 122022211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122022211321) 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, 2103831196 + ... + 2103831253.

It is an arithmetic number, because the mean of its divisors is an integer number (31557468375).

Almost surely, 2^122022211021 is an apocalyptic number.

It is an amenable number.

122022211021 is a deficient number, since it is larger than the sum of its proper divisors (4207662479).

122022211021 is an equidigital number, since it uses as much as digits as its factorization.

122022211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207662478.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122022211021 its reverse (120112220221), we get a palindrome (242134431242).

The spelling of 122022211021 in words is "one hundred twenty-two billion, twenty-two million, two hundred eleven thousand, twenty-one".